Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6495712 | Process for production of carboxylic acid aryl esters | Toshiyuki Yamauchi, Masuo Omichi, Tomohiro Tanino, Yoshikatsu Osamura | 2002-12-17 |
| 5932142 | Benzotriazolyl-alkylene bisphenol compounds, process for their preparation, and stabilized organic materials containing them | Toshiyuki Yamauchi, Hideo Aoki, Kazuyuki Ishihara | 1999-08-03 |
| 5808086 | Process for preparing bis (2-hydroxyphenyl-3-benztriazole) methanes | Naoyuki Sugii, Toshiyuki Yamauchi, Hideo Aoki, Kazuyuki Ishihara | 1998-09-15 |