Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4880796 | Antimicrobial preparation | Yoshiya Yamahira, Yoshiko Okuzawa, Shigeji Sato, Reimei Ishikawa | 1989-11-14 |
| 4855134 | Sustained-release preparation | Yoshiya Yamahira, Shigeji Sato | 1989-08-08 |
| 4849141 | Method for producing sustained release formulation | Shigeji Sato, Yoshio Sasaki, Teruo Miyata, Masayasu Furuse, Hiromi Naito | 1989-07-18 |