Issued Patents All Time
Showing 26–32 of 32 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4642663 | 6-tetrahydrofurfurylaminofluoran compound useful as a color former on an heat sensitive recording sheet | Hideyuki Sensui, Michihiro Gonda, Katsumasa Kikkawa | 1987-02-10 |
| 4612558 | Fluoran compounds | Mitsutoshi Anzai, Masahiko Yamaguchi, Kazuyuki Wakasugi, Michihiro Gonda, Toshiyuki Abe +2 more | 1986-09-16 |
| 4597795 | 6-tetrahydrofurfurylaminofluoran compound useful as a color former | Hideyuki Sensui, Michihiro Gonda, Katsumasa Kikkawa | 1986-07-01 |
| 4550329 | Heat sensitive record material | Michihiro Gonda, Katsumasa Kitsukawa, Mikiko Kanasugi, Yutaka Sato, Kikuo Otomo | 1985-10-29 |
| 4539577 | Heat sensitive record material | Kazuo Kaneko, Michihiro Gonda, Katsumasa Kitsukawa | 1985-09-03 |
| 4521605 | Carbazole compounds and process for preparing the same | Hideo Okazaki, Hiroshi Imagome, Kiyoshi Sakai | 1985-06-04 |
| 4465761 | Image-forming photosensitive composition | Yukio Takegawa, Akira Tukada, Nobuyoshi Endo | 1984-08-14 |