Issued Patents All Time
Showing 26–29 of 29 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4684738 | Process for producing benzophenone tetracarboxylic dianhydride | Shuetsu Fujiwara, Kenji Hosotani | 1987-08-04 |
| 4521622 | Process for producing aromatic amine | Shuetsu Fujiwara | 1985-06-04 |
| 4329492 | Process for production of methacrylic acid esters | Itsuo Nishiwaki, Masatoshi Arakawa | 1982-05-11 |
| 4246427 | Process for producing methacrylic acid | Ituo Nishiwaki, Akira Iio, Masatoshi Arakawa | 1981-01-20 |