Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4963232 | Process for producing a purified hydrazine hydrate | Yasuhisa Kuriyama, Shuuzabu Sakaguchi, Syoichi Nito | 1990-10-16 |
| 4751326 | Process for producing benzophenone-azine | Takanari Nawata, Shuzabu Sakaguchi, Osamu Aoki, Norio Takeda, Masafumi Shimpo | 1988-06-14 |
| 4727190 | Process for preparing benzophenone-azines | Takanari Nawata, Shuzabu Sakaguchi, Osamu Aoki, Norio Takeda, Yoshiyuki Aoki +1 more | 1988-02-23 |
| 4347383 | Process for producing benzophenone-azines | Tomiya Isshiki, Tetsuo Tomita, Shuzabu Sakaguchi, Osamu Aoki, Norio Takeda +1 more | 1982-08-31 |