Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5296440 | Heat-sensitive recording medium | Nobuo Kanda, Naoto Arai, Isamu Nakano, Tetsuo Tsuchida | 1994-03-22 |
| 5187143 | Heat sensitive recording material | Kazuo Watanabe | 1993-02-16 |
| 4906604 | Multi-color heat sensitive recording material | Tomoyuki Okimoto, Katsuhiko Ishida | 1990-03-06 |
| 4828957 | Two-color heat-sensitive recording material with 2-hydroxy-3-naphthoanilide as both coupler and color developing agent | Naoki Yonese, Mitsuru Kondo | 1989-05-09 |
| 4770973 | Heat-sensitive diazo recording material with diphenyl alkene coupler | Nobuo Kanda, Katsuhiko Ishida, Mitsuru Kondo | 1988-09-13 |
| 4659643 | Heat-sensitive recording diazo material with recording sensitizer | Katsuhiko Ishida, Masaharu Nojima | 1987-04-21 |
| 4652512 | Heat and light-sensitive recording materials with dialonium compound, coupler, and heat fusible amidine or diamidine compound | Katsuhiko Ishida, Masaharu Nojima | 1987-03-24 |
| 4529992 | Multicolor record material | Katsuhiko Ishida, Tomoyuki Okimoto | 1985-07-16 |
| 4510512 | Heat-sensitive record material | Tomoyuki Okimoto, Katsuhiko Ishida | 1985-04-09 |