Patents & Technologies List
In addition to those listed, there are many technologies (patents, know-how, copyrighted works, etc.) suitable for commercialization.
If you are interested, please contact us.
The realization of a probe with both fluorescent labeling and MRI contrast functions is not a dream!
Synthesis of heterotrinuclear lanthanide cluster complexes
|KARASHIMADA Ryunosuke, MUSHA Mitsutaka, IKI Nobuhiko|
|T19-383||Electronics, Hardware, Material||
Tunnel magneto-resistive sensor (TMR sensor) with high sensitivity and accuracy
|OGASAWARA Takahiro, OGANE Mikihiko, TSUNODA Masakiyo, ANDO Yasuo|
|T16-120||Measurement, Machine, Control||
Possible to visualize the effect of electrons when a magnetic field is applied, and observe & evaluate electron/spin distribution!
Method for creating electron-beam hologram, magnetic filed information measurement method and magnetic field information measuring device
|SHINDO Daisuke, SATO Takafumi|
|T18-488||Measurement, Machine, Control, Material||
High accuracy estimation based on the electromagnetic wave propagation property
Device and method for estimating the molecular chain aggregation
|TANEBE Tadao, OYAMA Yutaka, INOMATA Hiroshi, WATANABE Masaru, NARITA Fumio, KURITA Hiroki|
|T10-037||Measurement, Machine, Control||
Spatial resolution of a few nanometers, enabling rapid measurement
Structural Analysis System
|UEHARA Yoichi, KATANO Satoshi|
|T19-380||Material, Medical/Welfare device||
Able to maintain excellent antibacterial properties for a long time!
Biomaterial and its manufacturing method
|UEDA Kyosuke, NARUSHIMA Takayuki|
|T16-059||Measurement, Machine, Control||
Significant time savings by environmentally friendly plasma sterilization system!
Pathogen & pest control device and reaction vessel
|KANEKO Toshiro, TAKASHIMA Keisuke|
|T20-2977||Measurement, Machine, Control||
Next-generation electron spectrometer, which simultaneously satisfies the trade-off between energy resolution and sensitivity while keeping the instrument compact.
Ultra-high resolution & sensitivity electron spectrometer
|TAKAHASHI Masahiko, NAKAJIMA Isao, ONITSUKA Yuuki|
|T16-063||Medical drug(including research tools)||Able to simply diagnose diabetic nephropathy!
Monoclonal antibody recognizing phenyl sulfate
|TOMIOKA Yoshihisa, TSUKAMOTO Hiroki, KANEMITSU Yoshitomi, MATSUMOTO Yotaro, KONDO Yoshinori, ABE Takaaki|
|T19-072||Medical drug(including research tools)||Anti-vascular endothelial antibody (serum marker) detected in ulcerative colitis
Diagnostic marker for inflammatory bowel disease
|SHIRAI Tsuyoshi, FUJII Hiroshi, ISHII Tomonori, HARIGAE Hideo, KAKUTA Yoichi, MASAMUNE Atsushi, MUTOH Tomoyuki|
3-steps analysis to extract accurate spatial information!
Spatial information extraction of floating objects on the sea
|MURATA Hiroki, YONEZAWA Chinatsu, KOMATSU Teruhisa|
TMR ratio over 200% with no B addition, low temperature heat treatment and sputtered film formation
Co-based magnetic alloy for high TMR element
|MIZUKAMI Shigemi, TSUCHIYA Tomoki, ICHINOSE Tomohiro, KUNIMATSU Kazuma|
Able to realize extensive and efficient transdermal drug administration
Flexible microneedle arrays with liquid dipping channel
|NISHIZAWA Matsuhiko, YOSHIDA Shotaro, SATO Kaito|
|T19-441||Measurement, Machine, Control||
Possible to check the quality of metamaterials inexpensively, quickly, and accurately.
Evaluation method for optical properties
|SHIMIZU Makoto, et al.|
|T19-462||Material, Environment, Energy||
A structure that has visible light transmittance and can control the wavelength and direction of emitted infrared light.
Light transmission windows with controllable thermal radiation direction
|SHIMIZU Makoto, et al.|
|T19-064||Material, Environment, Energy||
Dry process, low cost, quick& simple joining technology!
Technology for easy and strong resin/metal bonding
|SATO Yutaka, et al.|
|T19-437||Material, Environment, Energy||
By capturing the light with an antenna and rectifying it with a diode, high efficiency (*) electric power conversion is achieved!
Photoelectric conversion device
|SHIMIZU Makoto, et al.|
|T07-098||Material, Environment, Energy||
Realization of a distributed curvature crystal lens with high light focusing accuracy!
Able to increase X-ray intensity and realize compact device with long life!
Distributed curvature crystal lens and X-ray reflectance measurement device
|OKUDA Hiroshi, NAKASHIMA Kazuo, FUJIWARA Kozo|
|T18-503||Material, Environment, Energy||
Amorphous silicon can be fabricated by liquid quenching method! Application to anode materials, etc.
Amorphous silicon powder
|OKADA Junpei, NAKAYAMA Koji, WADA Takeshi|
Precise manufacture of complicated structure with sparse/dense micro/nano-patterns!
Optical nanoimprinting method that enables a uniform residual layer without burr generation at mold edge
|NAGASE Kazuro, IKEDO Hiroaki, UEHARA Takuya, NAKAGAWA Masaru|
Elastic alloy with Young's modulus less than 25 Gpa which remains in the elastic range even when 600 Mpa stress is applied
Alloy with large elastic strain over 4%
|KAINUMA Ryosuke, OMORI Toshihiro, XU Xiao, XU Sheng|
|T18-493||Measurement, Machine, Control||
Able to suppress unstable vibration due to cavitation and improve suction performance
Inducer with slits
|IGA Yuka, KAWASAKI Satoshi|
|T20-2911||Measurement, Machine, Control||
The smart chair guides user's posture and prevents excessive physical load
Seat angle change equipment
|FUJITA Kazuyuki, SUZUKI Aoi, TAKASHIMA Kazuki, IKEMATSU Kaori, KITAMURA Yoshifumi|
High production yield and extremely low energy consumption!
Manufacturing method and device for aluminum nitride particles
|TAKIZAWA Hirotsugu, TAMBA Yuta, HAYASHI Yamato, YAMADA Katsuhiro, TORISU Takeshi, NOMOTO Hiderou, KOHNO Takumi|
Mg2Si film with high porosity and uniform vacancies
Mg2Si thermoelectric conversion film with reduced thermal conductivity while keeping electrical conductivity
|YAMADA Takahiro, YABU Hiroshi, MATSUI Jun|
Wide colored pigment without transition metals
Colorful TiO2 Particle
|YIN Shu et al.|
|T18-044||Electronics, Hardware, Measurement, Machine, Control||
Free & precise resonance frequency control!
Method for sweeping the resonance frequency of an optical resonator
|T18-045||Measurement, Machine, Control||
Able to fabricate a conductivity imparting type "ultra-dense" ceramic film on metal!
Ceramic coated material
|NOMURA Naoyuki, KAWASAKI Akira, ZHOU Weiwei|
Able to keep relatively high values for both strength and ductility
Titanium component and its manufacturing method
|KURITA Hiroki, NARITA Fumio|
Ultra-compact spectroscopic sensor enabling unprecedented component design
Transmission guided-mode resonant grating integrated spectroscopy device
|KANAMORI Yoshiaki, HANE Kazuhiro, EMA Daisuke|
|T19-041||Measurement, Machine, Control||
Realization of thermally stable memory able to operate with low energy
Chalcogen-free resistive switching type non-volatile memory material
|SUTO Yuji, YI Shuang, HATAKEYAMA Shogo|
|T16-008||Measurement, Machine, Control||
All-directional movement with a simple mechanism! Run in any direction on uneven ground!
Drive mechanism with high runnability for all-directional movement
|TADAKUMA Kenjiro et al.|
No need of pulverization process! Able to product easily the hydrogen gas at low cost!
Hydrogen gas production method and equipment
|KANO Junya, WATANABE Chika, KIMURA Rika|
|T18-107||Medical drug(including research tools)||Possible to obtain in a short time a biocompatible structure able to make chemical modification of the surface
Manufacturing method of a 2D/3D cell scaffold material
|ABE Hiroya, YABU Hiroshi|
Able to produce aluminum nitride crystals at low cost and high growth rate
Method for the production of aluminum nitride crystals using flux
|ADACHI Masayoshi, FUKUYAMA Hiroyuki, OHTSUKA Makoto, KAMBARA Arata|
No need for chemical or gas cylinder
Environmentally friendly and efficient extermination of pathogen and pest
Pathogen and pest extermination equipment
|KANEKO Toshiro, KATO Toshiaki|
Increase micro-scanner life by reducing torsion bar degradation
Scanning mirror and its manufacturing method
|HANE Kazuhiro, SASAKI Takashi, FUJITA Yuki|
|T18-069||Measurement, Machine, Control||
Drive voltage 1/10! Multi-electrode plasma actuator that doesn’t generate backflow or arc discharge
Plasma actuator that does not require a high-voltage power supply
|SATO Shintaro, OHNISHI Naofumi|
Able to use PTFE particles without fluorinated dispersant
Non-fluorinated PTFE water dispersant
Lamination technology that enables high electric power density without compromising power generation efficiency
Solid oxide fuel cell able to miniaturize
High wear and corrosion resistance for molding super engineering plastics!
Low cost mass production deployment is possible since powder metallurgy technology is not used
Fe-based alloys with high hardness and corrosion resistance
|YAMANAKA Kenta, CHIBA Akihiko|
Get high density by low temperature sintering!
Expand the application domain of transition metal boride which is a difficult sintering material
|KASADA Ryuta, KONDO Sousuke, YU Hao, JIMBA Yuki|
|T20-503||Measurement, Machine, Control||
Reproduce realistic sensations even with narrow bandwidth vibration devices! No noise!
Haptics technology for highly realistic reproduction of audio signals, etc.
|KONYO Masashi, TADOKORO Satoshi, etc|
|T19-438||Medical drug(including research tools)||Be promising as drug delivery vehicles, cell incubation indicators and cell thermometers
Cationic polymers for intracellular delivery without cell toxicity
|TOKUYAMA Hidetoshi, OKANO Kentaro et,al.|
Formation of high-strength / high-rigidity / high heat-resistant Mo alloy that can be cast (able to melt under 2000℃)! Equivalent to Ni-based alloy!
|YOSHIMI Kyosuke, MARUYAMA Kouichi, GOTO Takashi, etc.|
To provide evaluation method for swallowing function, sense of taste for food
A non-contact quantitative analysis device for food taken movement
|YAMBE Tomoyuki, SHIRAISHI Yasuyuki, et al.|
|T17-078||Material, Electronics, Hardware||
Low cost and easy to optimize "wavelength filtering" with high design flexibility!
Wavelength filtering structure
|KANAMORI Yoshiaki, HANE Kazuhiro, BITO Masanari|
|T18-280||Measurement, Machine, Control||
Non-contact, non-destructive and position-selective residual stress evaluation using volume variation obtained by microscopic Raman scattering spectrum
Residual stress evaluation method for chemically strengthened glass
|TERAKADO Nobuaki, UJIWARA Takumi, TAKAHASHI Yoshihiro, SASAKI Ryusei|
Possible to create semiconductor (MoS2) by friction Able to control the film thickness and number of layers
Film formation apparatus and method
|OYAMA Yutaka, TANABE Tadao|
Able to product GaN at low cost by forming of nitride semiconductor crystal boules
Nitride semiconductor freestanding substrate production method
|T15-001||Measurement, Machine, Control||
Manufacture small structure in short time by controlling the metallic glass material shape
Wavefront control element and diffraction grating
|KATO Hidemi, YASHIRO Wataru|
Easy production of well-dispersed amorphous nanoparticles at low temperature
Amorphous nanoparticles, production method and dispersion
|HAYASHI Yamato, NARITA Ichihito|
Able to store more electricity by using amorphous titanium
Ultracapacitor materials and ultracapacitors
|FUKUHARA Mikio, HASEGAWA Fumihiko, KURODA Tomoyuki, HASHIDA Toshiyuki|
Oxide dispersion strengthened alloys with uniform dispersion of fine oxide
particles can be fabricated by the additive manufacturing method!
Oxide dispersion strengthened alloys
|SEKIDO Nobuaki, SATO Katsuhiro, YOSHIMI Kyosuke|
|T20-032||Agriculture, Food item||
Easy to handle with a great effect on disease control!
Plant disease control agent containing a bacteriophage
|TAKAHASHI Hideki, SASAKI Ryouta, ANDO Sugihiro, MIYASHITA Shuhei|
Able to product high-temperature oxide superconducting tape wire over several kilometers without degrading superconducting properties
Joining method for high-temperature oxide superconducting tape wire
|HASHIZUME Hidetoshi, SATO Yutaka|
Limit hydrogen generation of stomach acid battery by using conductive polymer
Battery & anode for stable and long time electricity generation
|T18-293||Measurement, Machine, Control||
AvHighly accurate detection of fiber waviness and misorientation for carbon fiber reinforced plastics
Probe and a method for detecting fiber orientation defect
|KOSUKEGAWA Hiroyuki, TAKAGI Toshiyuki|
SiC biocast ceramics with a structure composed mainly of carbon fabricated at low temperature for a short time
Low temperature fabrication of SiC ceramics using wood
|YAMANE Hisanori, YAMADA Takahiro, KAWAMURA Fumihiro|
Suitable for thermally conductive filler and high-strength filler of sealing resin
Method and apparatus for producing aluminum nitride wire
|TAKIZAWA Hirotsugu, HAYASHI Yamato, et al.|
Realization of silk thread with uniformly dispersed CNF! Increased mechanical strength by feeding techniques!!
Silk thread with dispersion reinforced cellulose nanofibers and high strength / ultra low human impact on the environment
|WU Chen, KURITA Hiroki, WANG Zhenjin, NARITA Fumio|
|T18-272||Measurement, Machine, Control||
Avoid temperature rise of the injection device due to plasma and maintain a high sterilization effect
Injection device of liquid containing active species and sterilization & extermination method
|KANEKO Toshiro, TAKASHIMA Keisuke|
|T17-079||Measurement, Machine, Control||
Compact and high sensitivity (599nm/RIU) refractive index sensor
Metamaterial structure and its refractive index sensor
Possible to solve complex optimization problems with current quantum annealing
Solution for 3rd order and higher nonlinear transformation, etc. by quantum annealing
Technique for selecting the optimal route with high accuracy in hybrid approach
Optimal route selection technique which flexibly changes the cost function (AI)
|T17-036||Medical drug(including research tools)||Administration of little amount of prepared liquid drug shows excellent antitumor efficacy!
Lymphatic drug delivery system
|KODAMA Tetsuya, MORI shiro|
New speaker MEMS structure improves anti-dust, anti-water, power consumption and audio quality
Electrostatic Sound Wave Generation Device
|FROEMEL Joerg, TANAKA Shuji, OHTAKA Koichi|
Enabling precise shutter synchronization between several cameras
Camera Shutter Precise Synchronization
|T18-501||Measurement, Machine, Control||
High resolution and high accuracy absolute position measurement using diffracted light
Absolute position measurement device and measurement method
|SHIMIZU Yuki, WEI Gao|
World’s first n-type SnS thin films applicable for solar cells. Pollution-free, highefficient, thin and light-weight solar cell and photoelectric conversion elements
N-type SnS thin films applicable for solar cells
|SUZUKI Issei, KAWANISHI Sakiko, YANAGI Hiroshi|
High temperature strength improvement by adding TiC and ZrC in Mo-Si-B alloy
High-temperature strength Mo-Si-B alloy
|YOSHIMI Kyosuke, NAKAYAMA Shunichi, et al.|
|T17-103||Measurement, Machine, Control||
Vibration detection using unique shape of sensor and amount of changing high frequency impedance
High-sensitivity and low cost vibration sensor
High resistance to oxidation up to at least 800℃
Oxidation resistant Mo-Si-B-Ti-C alloy
|YOSHIMI Kyosuke, et al.|
High density twin microstructure porous copper with heat stability, maintaining repeated catalyst, high durability
Porous copper catalyst
|SAI Anpo, KAMEOKA Satoshi|
|T18-090||Measurement, Machine, Control||
Improve significantly sensor sensitivity thanks to the structure where the dielectric thickness changes with external force
Photonic metamaterial with metal/dielectric/metal 3 layers structure
|KANAMORI Yoshiaki, HANE Kazuhiro|
Real-time monitoring of several different frequency bands
Frequency spectrum regeneration method, receiver and reception method
|SUEMATSU Noriharu, FURUICHI Tomoyuki, AKIMOTO Kohei, MOTOYOSHI Mizuki|
Accurate positioning even indoors where GPS is not available!!
Indoor positioning system using non-audible sound
|VILLEGAS Julián and 1 more inventor|
Realization of 3D sound effect with an existing horizontal speaker arrays
3D sound effect system including elevation
Improvement of design degree of freedom for spin current element - Possible to generate spin current from a light source
Light-spin current conversion element and its manufacturing
|UCHIDA Kenichi, SAITO Eiji|
Spin / electricity current convertion ratio up to 100% with low cost material!
High electric current conversion ratio spintronics device
|ANDO Kazuya, SAITO Eiji|
Manufacturing Li4Ti5O12-carbon composite by using microwave at low cost!
Oxide ceramics – carbon composite and its manufacturing process
|HAYASHI Yamato, TAKIZAWA Hirotsugu|
|T14-107||Medical drug(including research tools)||Gene expression analysis is possible without changing copy number ratio in a sample!
Target specific and non-biased gene amplification
|T15-198||Measurement, Machine, Control||
Rapid obtaining of optical information in the depth direction to create 3D optical image!
Optical information apparatus and microscope system
Environment and human friendly light-emitting materials for displays and LEDs exhibiting excellent emission performance
Quantum dot phosphors free from hazardous elements
Single-handed operation of a smart phone is achieved!
Direct manipulation technique by pressure and contact size
|SIIO Itiro, IKEMATSU Kaori|
Filter noise which was difficult to be handled with conventional filtering method
High precision noise filtering technology
|KITAMURA Yoshifumi et al.|
The system enables buyer to receive data even when seller is offline
Information processing system safely to realize transaction of confidential data
|SAKAI Masao, IWAZAKI Junya, KOIZUMI Eisuke|
Total solution for satellite’s development, evaluation, launch and application
Micro- and Nano-satellites for space exploration
|YOSHIDA Kazuya, KUWAHARA Toshinori, SAKAMOTO Yuji|
Achieving higher computational speed than conventional methods without decryption
High-speed computational method for encrypted data
|HONMA Naofumi, UENO Rei|
Comparable computing ability with quantum annealing at room temperature
Random number generation unit and computing system
|FUKAMI Shunsuke, OHNO Hideo, et al|
|T18-508||Medical drug(including research tools)||Over 1000 times affinity to bind with RNA virus (vs. DPQ)! Promising diagnostic and inhibitory drug!
An inhibitor of Influenza A virus: tFIT-DPQ probe
|SATO Yusuke, NISHIZAWA Seiichi, TANABE Takaaki, KAWAGUCHI Atsushi|
|T16-040||Medical drug(including research tools)||Degradation and clearance of disease related intracellular targets by autophagy
Cargo-specific degraders using selective autophagy
|ARIMOTO Hirokazu, ITTO Kaori, TAKAHASHI Daiki|
Realize ultimate sensitivity and wide dynamic range over 100 dB in one exposure
High Sensitivity and Wide Dynamic Range CMOS Image Sensor
|SUGAWA Shigetoshi et al|
|T18-016||Material, Measurement, Machine, Control||
Cheap ingredients and low-T fabrication compatible with mass production. Hall sensor operable under bending conditions and over a wide T range
A metal-based Hall sensor material
|TSUKAZAKI Atsushi, FUJIWARA Kohei|
Phenyl Sulfate can be a predictor for a risk of developing Diabetic Kidney Disease
Risk Marker for Diabetic Kidney Disease
|ABE Takaaki, OGAWA Shin, TOMIOKA Yoshihisa|
Enable contents to stick on moving objects
Fast Projection System
User ID (public-key) management method for highly anonymous decentralized services
An anonymous key exchange technology with good security and simplicity
|SAKAI Masao, IWAZAKI Junya, KOIZUMI Eisuke, HASEGAWA Shingo, ISOBE Shuji, FUKUMITSU Masayuki|
Specific gravity is less than one third of Nitinol! The lightest superelastic alloy worldwide without allergic elements
Magnesium alloy exhibits superelastic effect
|ANDO Daisuke, SUTOU Yuji, OGAWA Yukiko, KOIKE Junichi|
Iron alloy with specific gravity less than 7, 0.2% proof stress more than 1000 MPa, and tensile stress more than 1000 Mpa
Iron alloy that is lighter and stronger than stainless steel
|ISHIDA Kiyohito, KAINUMA Ryosuke, SUTOU Yuji|
Incredible durability and safety（free from fire or explode accident）!
Similar energy density to lead battery, but with super quick charge/discharge ability
|YAMAMURA Tomoo, SHIRASAKI Kenji, SAKAMOTO Kiyoshi|
Low reaction temperature, high selectivity for oil, and good reusability!
A catalyst for polyolefin plastic hydrogenolysis
|TAMURA Masazumi, TOMISHIGE Keiichi, NAKAGAWA Yoshinao|
A cost down semi-solid die-casting method, applicable to present apparatus
A semi-solid diecast product with its particles’ diameter as 2~4μm
|ITAMURA Masayuki , ANZAI Kouichi|
|T12-060||Agriculture, Food item||
Mass fermentative production of useful substances will be obtained!
High-density culture of mutant filamentous fungi
|YOSHIMI Akira, GOMI Katsuya, ABE Keietsu|
|T16-155||Agriculture, Food item||
Several times of production volume or of cost down, whichever you want!
Fully dispersed culture of mutant filamentous fungi
|ABE Keietsu, YOSHIMI Akira, MIYAZAWA Ken, et al.|
|T17-024||Medical drug(including research tools)||New method for screening mitochondrial function-enhancer
Drug-screening method based on new regulatory mechanism of mitochondria & the products
|Yamakuni Toru, Kawahata Ichiro|
|T05-081||Medical drug(including research tools)||Bis(arylmethylidene)acetone, a curcumin-derivative for anti-cancer agent||SHIBATA Hiroyuki, IWABUCHI Yoshiharu, OHORI Hisatsugu, YAMAKOSHI Hiroyuki, KAKUDO Yuichi|
No production cytokines from murine dendritic cells, escape from phagocytosis by macrophage
Immune evasion particle for imaging & DDS
|ABE Keietsu, KAWAKAMI Kazuyoshi, AJIRI Tadafumi, FUKUMOTO Manabu, TAKAMI Seiichi, TOGASHI Takanari, MURAGAKI Kimihide, TAKAHASHI Toru|
|T09-133||Medical drug(including research tools)||
1000 times higher in vivo antitumor activity than Cetuximab!1 g/L（titer） of microbial productivity! High thermal stability!
EGFR-CD3 cross-linking Bispecific Antibody
|KUMAGAI Izumi, Ryutaro ASANO Ryutaro, NAKANISHI Takeshi, UMETSU Mitsuo|
|T14-026||Medical drug(including research tools)||
Capable of selecting anti EGFR antibody-sensitive/resistant patient from Ras wild-type group
Method for predicting of sensitivity to chemotherapy for colorectal cancer
|ISHIOKA Chikashi, TAKAHASHI Shin, OUCHI Kota, SHIMODAIRA Hideki, ABURATANI Hiroyuki|
Possible to relay messages in 2.5km among 30 mobiles
Momentary Message Switching among mobiles
|KATO Nei, NISHIYAMA Hiroki|
Enables to effectively oxidize sec-alcohol as well as n-alcohol and to oxidized with air
Novel alcohol oxidation catalyst
Possible to remove bio-film more effectively than pulsatile water jet. Qualified by human trial
Oral cleaning device with cavitation jet
|SOYAMA Hitoshi, YAMAMOTO Matsuo, TAKIGUCHI Takashi|
|T11-036||Medical drug(including research tools)||
low molecular weight compound with anti-cancer activity for nano-molarity
Anti-cancer drug with HDAC and PI3K inhibitory activity
|SAIJO Ken, ISHIOKA Chikashi, KATO Tadashi|
Possible for “Mass Production”
”Metallic glass” Nano Fiber
|NAKAYAMA Koji, YOKOYAMA Yoshihiko|
Possible for Nanoporous of Stainless steel , Nickel titanium and so on!!
|KATO Hidemi, WADA Takeshi, YUBUTA Kunio, INOUE Akihisa|
New material for PRAM with thermal stability
New material for PRAM
|SUTO Yuji, KOIKE Junichi, SAITO Yuta, KAMATA Toshiya|
1mm size of Cancer can be detected!!
NEW PET (positron emission tomography)
|ISHII Keizo, KIKUCHI Youhei|
|T08-080||Measurement, Machine, Control||
Maintenance and rare metal free generator
Permanent Magnet Reluctance Generator
|NAKAMURA Kenji, ICHINOKURA Osamu|