Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4843170 | Process for producing vinyl acetate | Yasuhiko Kijima, Akira Ito, Kenji Ishii | 1989-06-27 |
| 4828762 | Process for the production of 2,3,5-trimethylbenzoquinone | Tomoyuki Yui, Mitsuo Abe, Masahiro Jono, Hideo Uno | 1989-05-09 |