Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D577393 | Toy building block | Masaharu Nada | 2008-09-23 |
| 7235512 | Heat-sensitive recording material | — | 2007-06-26 |
| 7176162 | Heat-sensitive recording material | — | 2007-02-13 |
| 5547806 | Process for producing microcapsule containing diazonium salt compound and photo- and heat-sensitive recording material produced using the same | Sadao Ishige | 1996-08-20 |
| 5543260 | Diazo heat-sensitive recording material | Keiichi Tateishi, Sadao Ishige | 1996-08-06 |
| 5486446 | Multi-color heat-sensitive recording material utilizing multiple diazonium salt layers | Tetunori Matushita, Hiroshi Satoh, Kimiatus Nomura, Mitsuyuki Tsurumi | 1996-01-23 |
| 5213939 | Light- and heat-sensitive recording material | Takekatsu Sugiyama, Sadao Ishige, Naoto Yanagihara, Keiichi Tateishi | 1993-05-25 |
| 4975353 | Heat-sensitive recording materials | Katsuhiko Watanabe, Takekatsu Sugiyama, Sadao Ishige | 1990-12-04 |
| 4895826 | Heat-sensitive recording material with diazonium salt and coupler precursor with ester or urethane group | Katsuhiko Watanabe, Takayuki Hayashi, Masato Satomura, Takekatsu Sugiyama | 1990-01-23 |
| 4842979 | Black color heat-sensitive diazo microcapsule recording material with benzoylacetic amide coupler | Sadao Ishige, Toshimasa Usami, Toshiharu Tanaka | 1989-06-27 |
| 4737484 | Heat-sensitive recording material | Masayuki Iwasaki, Toshimasa Usami | 1988-04-12 |