Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4550180 | Method for manufacture of N-formylaspartic anhydride | Tadashi Takemoto, Toyoto Hijiya | 1985-10-29 |
| 4536842 | System for measuring interfloor traffic for group control of elevator cars | Kiyoshi Yoneda, Hiroshi Takeuchi, Toyoto Hijiya, Hideo Takeda, Koji Shibuya +1 more | 1985-08-20 |
| 4508912 | Process for producing N-carbobenzoxy-L-aspartic anhydride | Toyoto Hijiya, Hideo Takeda, Koji Shibuya, Kiichiro Tanaka | 1985-04-02 |