Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8888906 | Heat-sensitive color-developing composition and heat-sensitive recording material comprising the composition | Ryoji Yamaguchi, Keisuke Takuma | 2014-11-18 |
| 6355327 | Optical recording medium and dipyrromethene metal chelate compound for use therein | Tsutami Misawa, Taizo Nishimoto, Hisashi Tsukahara, Akira Ogiso, Kenichi Sugimoto +4 more | 2002-03-12 |
| 6162520 | Optical recording medium and dipyrromethene metal chelate compound for use therein | Tsutami Misawa, Taizo Nishimoto, Hisashi Tsukahara, Akira Ogiso, Kenichi Sugimoto +4 more | 2000-12-19 |
| 6093832 | Diiminoisoindoline compound and the process for producing the compound and use thereof | Yojiro Kumagae, Shigeo Fujita, Tsunehito Eda | 2000-07-25 |
| 5973140 | Phthalocyanine compound, its intermediate, process for producing the compound, and use thereof | Yojiro Kumagae, Shigeo Fujita, Tsunehito Eda | 1999-10-26 |
| 5627287 | Phthalide compound and a near infrared absorber and a recording material each comprising the same compound | Hiroyuki Sasaki, Shinzo Nawamoto, Jun Taniguchi, Bunji Sawano, Sayuri Wada +1 more | 1997-05-06 |
| 5334714 | Method for preparing alkoxyphthalocyanine | Takahisa Oguchi, Kenichi Sugimoto, Shin Aihara, Hisato Itoh, Mansuke Matsumoto +1 more | 1994-08-02 |
| 5220010 | Method for preparation alkoxyphthalocyanine | Takahisa Oguchi, Kenichi Sugimoto, Shin Athara, Hisato Itoh, Mansuke Matsumoto +1 more | 1993-06-15 |