Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5688836 | Polytetrafluoroethylene porous material and process for production of the same | Katsutoshi Yamamoto, Osamu Tanaka | 1997-11-18 |
| 5171805 | Modified polytetrafluoroethylene and process for preparing the same | Masayoshi Tatemoto, Yoshihisa Yamamoto, Katsutoshi Yamamoto | 1992-12-15 |