Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5922873 | Process for preparing N-tert-butyl-2-pyrazinecarboxamide and N-tert-butyl-2-piperazinecarboxamide | Nanao Watanabe, Sadao Asahi | 1999-07-13 |
| 5734055 | Process for preparing N-tert-butyl-2-pyrazinecarboxamide and N-tert-butyl-2-piperazinecarboxamide | Nanao Watanabe, Sadao Asahi, Takashi Kurahashi | 1998-03-31 |
| 5668281 | Process for preparing tertiary amine-N-oxide | Shinkichi Shimizu, Nanao Watanabe | 1997-09-16 |