Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4873261 | Pharmaceutical composition for treating ulcerative large intestinal disease | Wasei Miyazaki | 1989-10-10 |
| 4828236 | Damper device for a door having dual-direction operating biasing spring means | — | 1989-05-09 |
| 4797264 | Recovery of metals adsorbed on chelating agents | Masaaki Matsuda, Yoshirou Akiyoshi | 1989-01-10 |