Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 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, Shinzaburo Suzuki +2 more | 1989-06-13 |