Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6395416 | Separator for fuel battery and method of producing the same | Masahito Tanemoto, Mitsuoki Shiraishi, Katsunori Ueda | 2002-05-28 |
| 4990544 | Gasket composition comprising fibrillated PTFE | Hiroshi Asaumi, Zenji Shimura, Takehiro Yoshida, Kenji Tadakuma, Norio Takada +2 more | 1991-02-05 |
| 4839221 | Gasket containing (I) a sheet composition comprising (A) PTFE (B) inorganic powder (C) clay mineral and (II) a metal support for the sheet | Hiroshi Asaumi, Zenji Shimura, Takehiro Yoshida, Kenji Tadakuma, Norio Takada +2 more | 1989-06-13 |