Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4389338 | Method for manufacture of silver catalyst for production of ethylene oxide | Shin-ichi Nagase, Takahiko Nakai, Toshihiko Kumazawa | 1983-06-21 |
| 4376209 | Process for production of ethylene oxide | Fumio Watanabe, Toshihiko Kumazawa | 1983-03-08 |
| 4368144 | Silver catalyst for production of ethylene oxide | Fumio Watanabe, Toshihiko Kumazawa | 1983-01-11 |
| 4248740 | Process for preparing silver-supported catalyst for the production of ethylene oxide | Toshihiko Kumazawa, Isamu Kiguchi | 1981-02-03 |