Issued Patents 2002
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6462239 | Oxidation catalyst and oxidation process using the same | Ikuo Takahashi | 2002-10-08 |
| 6444841 | Hydroquinone diester derivatives and the method for producing the same | Ikuo Takahashi | 2002-09-03 |