Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4851730 | Brush holder assembly for electric motor | Fusao Fushiya, Akira Naitoh | 1989-07-25 |
| 4831162 | Preparation process of ethylene oxide | Mutsuo Nakajima, Hisaharu Kuboyama, Tadashi Komiyama, Hiroshi Kimura | 1989-05-16 |
| 4797400 | Piperazine compounds and anti-ulcer composition containing the same | Hiroshi Ohtaka, Kenji Suzuki, Koichi Shimohara, Sigeru Tajima, Keizo Ito | 1989-01-10 |