Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6583086 | Thermally sensitive recording medium | Seiki Yoneshige, Tomoyuki Nakano | 2003-06-24 |
| 6440897 | Thermally sensitive recording medium | Yukiko Ryu, Takashi Date | 2002-08-27 |
| 6028030 | Thermal sensitive recording medium | Tomoyuki Nakano, Koichi Yanai, Junko Seki, Hidetoshi Yoshioka | 2000-02-22 |
| 5919928 | Phenanthridine derivatives and metal complexes thereof used for transparent recording medium or optical recording medium | Yukiko Ryu, Tomoaki Nagai, Hidetoshi Yoshioka | 1999-07-06 |
| 5892042 | Acridine derivative metal complexes used for transparent recording medium or optical recording medium | Yukiko Ryu, Tomoaki Nagai, Hidetoshi Yoshioka | 1999-04-06 |
| 5792863 | Acridine derivatives and metal complexes thereof used for transparent recording medium or optical recording medium | Yukiko Ryu, Tomoaki Nagai, Hidetoshi Yoshioka | 1998-08-11 |
| 5118656 | Heat-sensitive recording sheet | Toshiaki Minami, Tadakazu Fukuchi, Toshio Kaneko | 1992-06-02 |
| 5066634 | Heat-sensitive recording sheet | Toshiaki Minami, Tadakazu Fukuchi, Toshio Kaneko | 1991-11-19 |