Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12308486 | Fuel cell module, fuel cell stack, and manufacturing method of fuel cell module | Tsutomu Fujii, YASUMICHI YOSHIHARA, Kozue Kuniyoshi | 2025-05-20 |
| 11108055 | Fuel cell | Yoko Kasai, Tsutomu Kawashima, Tsutomu Fujii, Shinichiro Imura, Toshihiro Otsuka +2 more | 2021-08-31 |
| 10978716 | Gas diffusion layer for fuel battery, membrane electrode assembly, and fuel battery | Tsutomu Kawashima, Kenichi Ezaki | 2021-04-13 |
| 10847826 | Polymer electrolyte fuel cells and production method thereof | Yoko Kasai, Tsutomu Kawashima, Miyuki Yoshimoto, Hiroaki Suzuki, Shinichiro Imura | 2020-11-24 |
| 10326150 | Fuel cell module, fuel cell stack, and method for producing fuel cell module | Norihisa Yoshimoto, Tsutomu Kawashima, Mitsuo Yoshimura | 2019-06-18 |