Issued Patents All Time
Showing 1–16 of 16 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7036980 | Apparatus and method for forming pattern | Ryoichi Hirano, Noriaki Nakayamada | 2006-05-02 |
| 5910516 | Process for production of photochromic cured product | Toshihiro Nishitake | 1999-06-08 |
| 5879591 | Process for production of photochromic cured product | Hironobu Nagoh, Kazumasa Itonaga | 1999-03-09 |
| 5880170 | Photopolymerizable composition and transparent cured product thereof | Toshihiro Nishitake | 1999-03-09 |
| 5776376 | Photochromic curable composition | Hironobu Nagoh, Takashi Kobayakawa | 1998-07-07 |
| 5708063 | Photochromic compound | Tsuneyoshi Tanizawa, Takashi Kobayakawa | 1998-01-13 |
| 5693830 | Process for preparing the spiropyrone compounds | Junji Momoda, Takashi Kobayakawa | 1997-12-02 |
| 5556931 | Polymerizable composition and organic glass | Hironobu Nagoh, Kazuhiko Kuramoto | 1996-09-17 |
| 5462698 | Photochromic composition | Takashi Kobayakawa, Kazumasa Itonaga, Kazuhiko Kuramoto | 1995-10-31 |
| 5395566 | Photochromic composition | Takashi Kobayakawa, Kazumasa Itonaga, Kazuhiko Kuramoto | 1995-03-07 |
| 5349065 | Photochromic compound | Takashi Tanaka, Kenji Tanaka, Yasuji Kida | 1994-09-20 |
| 5246989 | Photochromic compound, composition and use thereof | Kayo Iwamoto, Takashi Tanaka, Seiji Okazaki, Shinsuke Tanaka | 1993-09-21 |
| 5130058 | Photochromic compound, process for production thereof, use thereof and composition containing said photochromic compound | Takashi Tanaka, Kenji Tanaka, Yasuji Kida | 1992-07-14 |
| 5106998 | Photochromic compound, composition and use thereof | Takashi Tanaka, Kenji Tanaka, Yasuji Kida | 1992-04-21 |
| 4960678 | Photochromic compounds | Takashi Tanaka, Yasuji Kida | 1990-10-02 |
| 4882438 | Photochromatic compounds | Takashi Tanaka, Yasuji Kida | 1989-11-21 |