Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5696301 | Process for preparing protocatechualdehyde | Katsumasa Harada, Masashi Shirai, Toshio Furuya | 1997-12-09 |
| 5627227 | Ultraviolet absorber and coating material | Masanobu Suga, Tsuyoshi Asano | 1997-05-06 |