Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11535915 | Stainless steel material, constituting component, cell, and fuel cell stack | Takumi Nishimoto | 2022-12-27 |
| 10622643 | Carbon separator for solid polymer fuel cell, solid polymer fuel cell, and solid polymer fuel cell stack | — | 2020-04-14 |
| 8100313 | Source blank for stainless steel three-ply clad sheet, production methods of clad steel plate and sheet for solid polymer type fuel cell separator, and solid polymer type fuel cell separator | Motomichi Kanbe, Kunihiko Ushio, Takeo Yazawa, Hideaki Yamamoto, Akira Seki | 2012-01-24 |
| 7776486 | Titanium-based material for fuel cell separators and a method for the production thereof | Akira Seki, Takashi Maeda, Wataru Takahashi, Takashi Doi | 2010-08-17 |
| 6379476 | Stainless steel product for producing polymer electrode fuel cell | Takashi Doi, Akira Seki, Shinji Fukuta | 2002-04-30 |
| 5944917 | Stainless steel for ozone added water and manufacturing method thereof | Kiyoko Takeda, Shigeki Azuma, Yoshitaka Nishiyama, Yasushi Matsuda | 1999-08-31 |
| 5449579 | Colored metal plate and process for manufacturing same | Hajime Murakami | 1995-09-12 |
| 4812177 | Hot working method for producing a superplastic ferrous duplex-phase alloy | Yasuhiro Maehara | 1989-03-14 |
| 4770703 | Sintered stainless steel and production process therefor | Takeo Kudo, Akira Seki, Masaru Nishiguchi | 1988-09-13 |
| 4721600 | Superplastic ferrous duplex-phase alloy and a hot working method therefor | Yasuhiro Maehara | 1988-01-26 |
| 4581202 | Sintered stainless steel and production process therefor | Takeo Kudo | 1986-04-08 |
| 4360381 | Ferritic stainless steel having good corrosion resistance | Taishi Moroishi, Masao Koike | 1982-11-23 |