Issued Patents 1997
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5686635 | Tetrahydro-alkenyl-methanonaphthalene-5,8-dione derivatives | Kimio Hamamura, Tetsuo Iwama, Chiaki Seki | 1997-11-11 |
| 5677471 | Process for the preparation of quinone derivative | Kimio Hamamura, Tetsuo Iwama, Chiaki Seki | 1997-10-14 |
| 5608092 | 1,4,4.sub.a 5,8,9.sub.a -hexahydro-1.alpha.,4.alpha.-methanoan-thraquinone derivative(s) | Kimio Hamamura, Chiaki Seki | 1997-03-04 |
| 5602493 | Bias circuit for an input terminal | Mitsuo Kusakabe | 1997-02-11 |