Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4873367 | Method for preparing 4-hydroxy-3-phenylbenzoic acid | Timothy M. Sivavec, Tohru Takekoshi | 1989-10-10 |
| 4808696 | Method for making organobis(thioether)s, and products obtained therefrom | Tohru Takekoshi, Thomas L. Evans | 1989-02-28 |