Issued Patents All Time
Showing 26–46 of 46 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5494767 | Phthalocyanine composition, process for preparing the same and electrophotographic photoreceptor using the same | Mikio Itagaki, Megumi Matsui, Hiroko Ishikawa, Yoshii Morishita, Takayuki Akimoto | 1996-02-27 |
| 5484685 | Naphthalocyanine derivatives, production thereof, optical recording medium using the same, and production thereof | Seiji Tai, Nobuyuki Hayashi, Koichi Kamijima, Mitsuo Katayose, Takayuki Akimoto +4 more | 1996-01-16 |
| 5449581 | Phthalocyanine composition, process for preparing the same, electrophotographic photoreceptor using the same and coating solution for charge generation layer containing the same | Megumi Matsui, Takayuki Akimoto, Mikio Itagaki | 1995-09-12 |
| 5428152 | Bis(trialkylsiloxy)silicon naphthalocyanine compounds wherein all the alkyl groups are the same and have 1-3 carbon atoms | Seiji Tai | 1995-06-27 |
| 5403958 | Electrophotographic member | Yoshii Morishita, Yasushi Sugimoto, Hiroko Ishikawa, Yoshiaki Noda, Shigeru Murakami +4 more | 1995-04-04 |
| 5382687 | Enamine derivatives | Yoshii Morishita, Yasushi Sugimoto, Hiroko Ishikawa, Hiroshi Kobayashi, Takaaki Sonoda | 1995-01-17 |
| 5352834 | Electrophotographic member | Yoshii Morishita, Yasushi Sugimoto, Hiroko Ishikawa, Yoshiaki Noda, Shigeru Murakami +4 more | 1994-10-04 |
| 5304445 | Phthalocyanine composition, process for preparing the same and electrophotographic photoreceptor using the same | Mikio Itagaki, Megumi Matsui, Hiroko Ishikawa, Yoshii Morishita, Takayuki Akimoto | 1994-04-19 |
| 5272030 | Electrophotographic member comprising enamine derivatives | Yoshii Morishita, Yasushi Sugimoto, Hiroko Ishikawa, Hiroshi Kobayashi, Takaaki Sonoda | 1993-12-21 |
| 5233089 | Enamine derivatives | Yasuo Katsuya, Takayuki Akimoto, Yoshii Morishita, Yasushi Shinbo, Akira Kageyama | 1993-08-03 |
| 5219706 | Naphthalocyanine derivative and production process thereof, as well as optical information recording media using the derivatives and production process thereof | Seiji Tai, Nobuyuki Hayashi, Yasushi Iwakabe, Shunichi Numata, Noriyuki Kinjo +4 more | 1993-06-15 |
| 5214188 | 2,3-dicyanonaphthalene derivatives | Seiji Tai, Nobuyuki Hayashi, Hideo Hagiwara, Mitsuo Katayose, Koichi Kamijima +4 more | 1993-05-25 |
| 5188922 | Optical recording medium | Seiji Tai | 1993-02-23 |
| 5160487 | Electrophotographic member | Yoshii Morishita, Yasushi Sugimoto, Hiroko Ishikawa, Yoshiaki Noda, Shigeru Murakami +4 more | 1992-11-03 |
| 5081236 | Electrophotographic plate containing naphthalocyanines which contain siloxy groups | Seiji Tai | 1992-01-14 |
| 5034309 | Naphthalocyanine derivatives and their use in optical recording medium | Seiji Tai, Nobuyuki Hayashi, Hideo Hagiwara, Mitsuo Katayose, Koichi Kamijima +4 more | 1991-07-23 |
| 5021563 | Metal naphthalocyanine derivative and process for producing the same | Seiji Tai, Nobuyuki Hayashi, Yasushi Iwakabe, Noriyuki Kinjo, Shunichi Numata | 1991-06-04 |
| 4886721 | Electrophotographic plate by use of metal naphthalocyanine derivative | Seiji Tai, Nobuyuki Hayashi, Yasushi Iwakabe, Noriyuki Kinjo, Shunichi Numata | 1989-12-12 |
| 4842970 | Electrophotographic plate containing a naphthalocyanine compound | Seiji Tai, Nobuyuki Hayashi | 1989-06-27 |
| 4833264 | 5- or 6-alkoxycarbonyl-2,3-dicyanonaphthalenes | Seiji Tai, Nobuyuki Hayashi | 1989-05-23 |
| 4749637 | Electrophotographic plate with silicon naphthalocyanine | Seiji Tai | 1988-06-07 |