Issued Patents All Time
Showing 26–50 of 66 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5096872 | Recording material | Tetsuo Tsuchida, Fumio Seyama, Tatsuya Meguro | 1992-03-17 |
| 5094999 | Recording material | Testsuo Tsuchida, Fumio Seyama, Tatsuya Meguro | 1992-03-10 |
| 4985393 | Heat sensitive recording material | Fumio Seyama, Tetsuo Tsuchida | 1991-01-15 |
| 4977132 | Heat-sensitive record material | Tetsuo Tsuchida, Tatsuya Meguro, Fumio Seyama | 1990-12-11 |
| 4898941 | Process for preparing diphenylalkene derivatives | Nobuo Kanda, Haruo Omura, Yukihiro Abe | 1990-02-06 |
| 4828957 | Two-color heat-sensitive recording material with 2-hydroxy-3-naphthoanilide as both coupler and color developing agent | Naoki Yonese, Tosaku Okamoto | 1989-05-09 |
| 4803193 | Heat-sensitive recording material using chromeno compound | Nobuo Kanda, Yukihiro Abe | 1989-02-07 |
| 4794101 | Heat-sensitive recording material | Nobuo Kanda, Kimie Tsuboi, Fumio Seyama | 1988-12-27 |
| 4770973 | Heat-sensitive diazo recording material with diphenyl alkene coupler | Nobuo Kanda, Katsuhiko Ishida, Tosaku Okamoto | 1988-09-13 |
| 4761396 | Heat-sensitive recording material | Nobuo Kanda, Kazuko Hirahara | 1988-08-02 |
| 4748148 | Recording system utilizing phthalide derivatives as colorless chromogenic material | Tomoyuki Okimoto, Nobuo Kanda | 1988-05-31 |
| 4746645 | Heat-sensitive recording material | Teijiro Kitao, Toshitake Suzuki, Masayuki Omatsu, Hironori Fujii, Kenji Minami | 1988-05-24 |
| 4731353 | Heat-sensitive recording material | Fumio Hama, Nobuo Kanda | 1988-03-15 |
| 4730057 | Phthalide derivatives useful as colorless chromogenic material | Nobuo Kanda, Naoki Yonese | 1988-03-08 |
| 4729984 | Heat sensitive recording sheets containing sulfone derivatives | Fumio Hama, Masayuki Omatsu | 1988-03-08 |
| 4713488 | Method for producing cycloalkyl aminophenol derivatives | Masayuki Omatsu, Naoki Yonese | 1987-12-15 |
| 4706126 | Facsimile apparatus | — | 1987-11-10 |
| 4704379 | Pressure sensitive manifold sheet | Shunsuke Shioi, Kazuyuki Shinmitsu, Nobuo Kanda, Makoto Miyake | 1987-11-03 |
| 4661857 | Facsimile communication control method | — | 1987-04-28 |
| 4658276 | Phthalide derivatives and recording system utilizing the same | Nobuo Kanda, Tetsuro Horiike | 1987-04-14 |
| 4641160 | Recording system utilizing phthalide derivatives as colorless chromogenic material | Tomoyuki Okimoto, Nobuo Kanda | 1987-02-03 |
| 4633277 | Heat-sensitive recording material | Toshitake Suzuki, Fumio Hama | 1986-12-30 |
| 4629800 | Fluoran compounds | Naoki Yonese, Masayuki Omatsu | 1986-12-16 |
| 4620233 | Facsimile transceiver utilizing orthogonal conversion | Mutsuo Ogawa, Takemi Hashimoto, Kazuyuki Hara | 1986-10-28 |
| 4612557 | Hydroxydiphenyl sulfone derivative and heat-sensitive recording material using the derivative | Fumio Hama, Toshitake Suzuki | 1986-09-16 |