Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5412096 | Hydrochloride salts of heterocyclic spiro compounds | Shin-ichi Tsukamoto, Hitoshi Nagaoka, Shinji Usuda, Toshinari Tamura | 1995-05-02 |
| RE34653 | Heterocyclic spiro compounds and methods for preparing the same | Shin-ichi Tsukamoto, Hitoshi Nagaoka, Shinji Usuda, Toshinari Tamura | 1994-07-05 |
| 5041549 | Heterocyclic spiro compounds and methods for preparing the same | Shin-ichi Tsukamoto, Hitoshi Nagaoka, Shinji Usuda, Toshinari Tamura | 1991-08-20 |
| 4996210 | Heterocyclic spiro compounds and methods for preparing the same | Shin-ichi Tsukamoto, Hitoshi Nagaoka, Shinji Usuda, Toshinari Tamura | 1991-02-26 |
| 4940795 | Heterocyclic spiro compounds and methods for preparing the same | Shin-ichi Tsukamoto, Hitoshi Nagaoka, Shinji Usuda, Toshinari Tamura | 1990-07-10 |
| 4609656 | Medical agent for improving and treating mental symptoms induced by cerebral disturbances | Minoru Yamamoto | 1986-09-02 |