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For the Inventor, By the Inventor

Hitachi, Japan

Toru Koyama

USPTO Granted Patents = 14

Average Co-Inventor Count = 5.4

ph-index = 8

Forward Citations = 162(Granted Patents)


Company Filing History:

goldMedal14 out of 42,508 
 
Hitachi, Ltd.
 patents

Years Active: 1980-2010

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14 patents (USPTO):Explore Patents
1. 7803496 - Fuel cell, fuel cell power source system and electronic devices using the same (2010-09-28),
2. 7560185 - Solid polymer electrolyte, a membrane using thereof, a solution for coating electrode catalyst, a membrane/electrode assembly, and a fuel cell (2009-07-14),
3. 7553574 - Solid polymer electrolyte, a membrane using thereof, a solution for coating electrode catalyst, a membrane/electrode assembly, and a fuel cell (2009-06-30),
4. 6964823 - Solid polymer electrolyte, a membrane using thereof, a solution for coating electrode catalyst, a membrane/electrode assembly, and a fuel cell (2005-11-15),
5. 6670065 - Solid polymer electrolyte, a membrane using thereof, a solution for coating electrode catalyst, a membrane/electrode assembly, and a fuel cell (2003-12-30),
6. 5656350 - Coil impregnant of epoxy resin from polyhydric phenol mixture (1997-08-12),
7. 5606300 - Superconducting magnet superconducting magnet coil, and manufacturing (1997-02-25),
8. 5538942 - Method for producing a superconducting magnet coil (1996-07-23),
9. 5416373 - Electrically insulated coils and a method of manufacturing thereof (1995-05-16),
10. 5393805 - Epoxy resin composition for insulating a coil, and a coil molded from (1995-02-28),
11. 5384197 - Superconducting magnet coil and curable resin composition used therein (1995-01-24),
12. 4900807 - Polymer from nitrile terminated compounds having Schiff bonds and (1990-02-13),
13. 4752641 - Thermosetting resin composition and prepolymer obtained therefrom (1988-06-21),
14. 4222802 - Process for producing electric windings (1980-09-16),

Title: The Innovations of Toru Koyama

Introduction

Toru Koyama is a prominent inventor based in Hitachi, Japan. He has made significant contributions to the field of fuel cell technology, holding a total of 14 patents. His work focuses on developing advanced systems that enhance the efficiency and functionality of fuel cells.

Latest Patents

Koyama's latest patents include innovations in fuel cells, specifically a fuel cell power source system and electronic devices utilizing the same technology. His patented fuel cell features a membrane electrode assembly designed to generate power by oxidizing fuel at the anode electrode and reducing oxygen at the cathode electrode. The design incorporates an anode diffusion layer that allows fuel to pass through, facilitating electron transfer generated by oxidation. Additionally, a cathode diffusion layer is included to remove water produced during the reaction and to transfer electrons for reduction. The system also consists of an anode current collector and endplate, as well as a cathode current collector and endplate, all aimed at optimizing electron transfer. Koyama's innovations also extend to solid polymer electrolytes, which are made from polymer compounds with hydrocarbon aromatic groups, enhancing the performance of fuel cells.

Career Highlights

Koyama has built a successful career at Hitachi, Ltd., where he has been instrumental in advancing fuel cell technology. His expertise and innovative approach have positioned him as a key figure in the development of sustainable energy solutions.

Collaborations

Some of Koyama's notable coworkers include Toshiyuki Kobayashi and Kenji Yamaga, who have collaborated with him on various projects within the realm of fuel cell technology.

Conclusion

Toru Koyama's contributions to fuel cell technology exemplify his commitment to innovation and sustainability. His patents and work at Hitachi, Ltd. continue to influence the future of energy solutions.

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