Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4888401 | Molding material for optics | Takao Kawaki, Yuh Miyauchi, Eizi Ukita, Toru Nakajima, Mituhiko Masumoto | 1989-12-19 |
| 4843170 | Process for producing vinyl acetate | Tomiya Isshiki, Akira Ito, Kenji Ishii | 1989-06-27 |