Issued Patents All Time
Showing 1–19 of 19 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5296440 | Heat-sensitive recording medium | Naoto Arai, Tosaku Okamoto, Isamu Nakano, Tetsuo Tsuchida | 1994-03-22 |
| 5110786 | Heat-sensitive recording material | Naoto Arai, Masaharu Nojima | 1992-05-05 |
| 5017545 | Heat sensitive recording material | Ritsuo Mandoh, Masaharu Nojima, Naoto Arai | 1991-05-21 |
| 4898941 | Process for preparing diphenylalkene derivatives | Haruo Omura, Yukihiro Abe, Mitsuru Kondo | 1990-02-06 |
| 4803193 | Heat-sensitive recording material using chromeno compound | Yukihiro Abe, Mitsuru Kondo | 1989-02-07 |
| 4794101 | Heat-sensitive recording material | Kimie Tsuboi, Fumio Seyama, Mitsuru Kondo | 1988-12-27 |
| 4770973 | Heat-sensitive diazo recording material with diphenyl alkene coupler | Katsuhiko Ishida, Tosaku Okamoto, Mitsuru Kondo | 1988-09-13 |
| 4761396 | Heat-sensitive recording material | Kazuko Hirahara, Mitsuru Kondo | 1988-08-02 |
| 4748148 | Recording system utilizing phthalide derivatives as colorless chromogenic material | Mitsuru Kondo, Tomoyuki Okimoto | 1988-05-31 |
| 4731353 | Heat-sensitive recording material | Fumio Hama, Mitsuru Kondo | 1988-03-15 |
| 4730057 | Phthalide derivatives useful as colorless chromogenic material | Naoki Yonese, Mitsuru Kondo | 1988-03-08 |
| 4704379 | Pressure sensitive manifold sheet | Shunsuke Shioi, Kazuyuki Shinmitsu, Mitsuru Kondo, Makoto Miyake | 1987-11-03 |
| 4691357 | Stereophonic receiving circuit providing improved switching characteristics between stereophonic and monaural modes | — | 1987-09-01 |
| 4658276 | Phthalide derivatives and recording system utilizing the same | Tetsuro Horiike, Mitsuru Kondo | 1987-04-14 |
| 4656364 | Antenna switching circuit for a diversity receiving system and branching circuit with a signal attenuation operation | Tomohisa Yokogawa, Hideki Iwasaki | 1987-04-07 |
| 4641160 | Recording system utilizing phthalide derivatives as colorless chromogenic material | Mitsuru Kondo, Tomoyuki Okimoto | 1987-02-03 |
| 4580153 | Record material | Mitsuru Kondo, Akio Noguchi, Yukio Takayama | 1986-04-01 |
| 4536220 | Fluoran derivatives as new compounds and recording system utilizing the same as colorless chromogenic material | Mitsuru Kondo, Hiroshi Iwasaki, Haruo Omura | 1985-08-20 |
| 4524373 | Fluoran derivatives as new compounds, process for preparing the same and recording system utilizing the same as colorless chromogenic material | Mitsuru Kondo, Hiroshi Iwasaki, Masayuki Omatsu, Haruo Omura | 1985-06-18 |