Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5185460 | Aminoacetonitrile derivatives | Seiji Tazaki, Nobuhiro Umeda, Nobuo Matsui, Tomio Yagihara | 1993-02-09 |
| 4990630 | 2,3-diaminoacrylonitrile derivatives and process for making the same | Nobuhiro Umeda, Tomio Yagihara, Isami Hamamoto | 1991-02-05 |