Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4851551 | Ultraviolet ray absorbing agent | Tatsuo Kaneoya | 1989-07-25 |
| 4845244 | Production of hydroxyphenylpropionic acid ester having a novel crystalline structure | Manji Sasaki, Chinehito Ebina, Shinichi Yachigo, Tamaki Ishii | 1989-07-04 |