Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| RE31341 | Polytetrafluoroethylene fine powder and process for producing the same | Shigeru Ichiba, Tetsuo Shimizu, Chuzo Okuno, Tosinori Kadowaki, Katsutoshi Yamamoto | 1983-08-09 |
| 4363900 | Process for preparing polytetrafluoroethylene fine powder | Tetsuo Shimizu | 1982-12-14 |