Issued Patents All Time
Showing 51–58 of 58 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4482742 | Process for preparing of 3,3'-diamino diphenylsulfones | Kenichi Sugimoto, Yoshimitsu Tanabe | 1984-11-13 |
| 4453009 | Process for producing fluorobenzophenone derivatives | Akihiro Yamaguchi, Kenichi Sugimoto, Yoshimitsu Tanabe | 1984-06-05 |
| 4407892 | Heat sensitive recording sheet | Akihiro Yamaguchi, Hisamichi Murakami | 1983-10-04 |
| 4380671 | Process for the preparation of 2,2'-bis(4-substituted phenol)sulfides | Akihiro Yamaguchi, Tadashi Kobayashi, Hisamichi Murakami | 1983-04-19 |
| 4312522 | Heat sensitive recording sheet | Akihiro Yamaguchi, Hisamichi Murakami | 1982-01-26 |
| 4287366 | Process for preparing bisphenol sulfone derivatives | Akihiro Yamaguchi, Hisamichi Murakami, Tadashi Kobayashi | 1981-09-01 |
| 4275240 | Process for the preparation of 2,2'-bisphenol sulfoxides | Akihiro Yamaguchi, Hisamichi Murakami, Tadashi Kobayashi | 1981-06-23 |
| 4260179 | Color-developing sheet for pressure-sensitive recording sheets | Akihiro Yamaguchi, Tadashi Kobayashi, Kisuke Osawa, Hisamichi Murakami, Noboru Yamato +1 more | 1981-04-07 |