Issued Patents All Time
Showing 1–19 of 19 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5683850 | Diazo heat-sensitive recording material comprising hydroxy coumarin as a coupler | Tetunori Matushita, Hiroshi Sato, Kimiatsu Nomura, Mitsuyuki Tsurumi | 1997-11-04 |
| 5547806 | Process for producing microcapsule containing diazonium salt compound and photo- and heat-sensitive recording material produced using the same | Hiroshi Kamikawa | 1996-08-20 |
| 5543260 | Diazo heat-sensitive recording material | Keiichi Tateishi, Hiroshi Kamikawa | 1996-08-06 |
| 5492789 | Process for producing microcapsules containing a diazonium salt compound and a photofixation thermal recording material employing the same | Akira Igarashi | 1996-02-20 |
| 5370965 | Positive-working light-sensitive composition containing diazonium salt and novolak resin | Shunichi Kondo, Mitsumasa Tsuchiya, Takekatsu Sugiyama, Toshifumi Inno, Yoshimasa Aotani | 1994-12-06 |
| 5338642 | Diazo type recording material comprising two couplers wherein the novel coupler used is a bis-malonamide | Toshiharu Tanaka, Takekatsu Sugiyama, Hirokazu Shimada | 1994-08-16 |
| 5250384 | Light-sensitive heat-sensitive composition and recording material comprising same and image formation process using same | Jun Yamaguchi, Takekatsu Sugiyama | 1993-10-05 |
| 5213939 | Light- and heat-sensitive recording material | Takekatsu Sugiyama, Naoto Yanagihara, Hiroshi Kamikawa, Keiichi Tateishi | 1993-05-25 |
| 5212042 | Positive type light-sensitive composition | Fumiaki Shinozaki, Akira Umehara | 1993-05-18 |
| 5180652 | Light- and heat-sensitive composition, and recording material | Jun Yamaguchi, Kozo Sato, Shintaro Washizu, Isamu Itoh | 1993-01-19 |
| 4975353 | Heat-sensitive recording materials | Katsuhiko Watanabe, Takekatsu Sugiyama, Hiroshi Kamikawa | 1990-12-04 |
| 4842979 | Black color heat-sensitive diazo microcapsule recording material with benzoylacetic amide coupler | Toshimasa Usami, Hiroshi Kamikawa, Toshiharu Tanaka | 1989-06-27 |
| 4771032 | Heat-sensitive recording material and recording method therefor | Jun Yamaguchi, Toshiharu Tanaka, Toshimasa Usami | 1988-09-13 |
| 4598036 | Print-out compositions | Masayuki Iwasaki, Minoru Maeda, Fumiaki Shinozaki | 1986-07-01 |
| 4535348 | Fluoran derivatives and recording material using same | Ken Iwakura | 1985-08-13 |
| 4471074 | Heat-sensitive recording materials | Ken Iwakura, Masato Satomura | 1984-09-11 |
| 4433156 | Process for preparing fluoran derivatives | Kozo Sato, Ken Iwakura | 1984-02-21 |
| 4401717 | Heat-sensitive recording material | Teppei Ikeda, Nobuyoshi Sekikawa, Akira Igarashi, Takekatsu Sugiyama | 1983-08-30 |
| 4220356 | Recording materials containing chromenoindoles | Hideo Usui, Keiso Saeki | 1980-09-02 |