Issued Patents 1994
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5376617 | Crystal modification of 2-(3-methylanilion)-3-methyl-6-diethylamino-fluoran, process for the preparation thereof, and recording materials containing said crystal modification | Yojiro Kumagae, Shigeo Fujita, Sayuri Wada, Shuuichi Hashimoto | 1994-12-27 |
| 5342967 | Crystal modifications of 2-M-toluidino-3-methyl-6-di-N-butylaminofluoran, process for preparing thereof, and recording materials containing said crystal modifications | Shigeo Fujita, Yojiro Kumagae, Sayuri Wada, Shuichi Hashimoto | 1994-08-30 |
| 5338866 | Crystal modification of 2-(3-methylanilino)-3-methyl-6-diethylaminofluoran, process for the preparation thereof, and recording materials containing said crystal modification | Yojiro Kumagae, Shigeo Fujita, Sayuri Wada, Shuuichi Hashimoto | 1994-08-16 |
| 5334714 | Method for preparing alkoxyphthalocyanine | Takahisa Oguchi, Kenichi Sugimoto, Shin Aihara, Hisato Itoh, Toshihiro Masaoka +1 more | 1994-08-02 |