Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5149462 | Optically active compound | Keiichi Sakashita, Seiji Hayashi, Tetsuya Ikemoto | 1992-09-22 |
| 4347356 | Novel nitrogen-containing monoterpene derivatives | Ryousuke Touyama, Hiroyuki Inouye, Tetsuro Shingu, Yoshio Takeda, Takeshi Ikumoto +1 more | 1982-08-31 |
| 4247698 | Red coloring composite and the method for its production | Ryosuke Toyama, Hiroyuki Inoue, Tetsuro Shingu, Yoshio Takeda, Takeshi Ikumoto +1 more | 1981-01-27 |
| 4232159 | Nitrogen-containing monoterpene derivatives | Ryousuke Touyama, Hiroyuki Inouye, Tetsuro Shingu, Yoshio Takeda, Takeshi Ikumoto +1 more | 1980-11-04 |