Issued Patents All Time
Showing 26–42 of 42 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5284943 | Tatraazaporphin, process for producing the same, as well as optical recording media using the same and production processes thereof | Nobuyuki Hayashi, Koichi Kamijima, Mitsuo Katayose, Takayuki Akimoto, Hideo Hagiwara | 1994-02-08 |
| 5268485 | Naphthalocyanine derivatives, production thereof and optical recording medium using the same | Mitsuo Katayose, Nobuyuki Hayashi, Takayuki Akimoto, Koichi Kamajima, Hideo Hagiwara | 1993-12-07 |
| 5219706 | Naphthalocyanine derivative and production process thereof, as well as optical information recording media using the derivatives and production process thereof | Shigeru Hayashida, Nobuyuki Hayashi, Yasushi Iwakabe, Shunichi Numata, Noriyuki Kinjo +4 more | 1993-06-15 |
| 5217856 | Tetraazaporphin, process for producing the same, as well as optical recording media using the same and production processes thereof | Nobuyuki Hayashi, Koichi Kamijima, Mitsuo Katayose, Takayuki Akimoto, Hideo Hagiwara | 1993-06-08 |
| 5214188 | 2,3-dicyanonaphthalene derivatives | Shigeru Hayashida, Nobuyuki Hayashi, Hideo Hagiwara, Mitsuo Katayose, Koichi Kamijima +4 more | 1993-05-25 |
| 5188922 | Optical recording medium | Shigeru Hayashida | 1993-02-23 |
| 5110968 | Naphthalocyanine derivatives, production thereof, optical recording medium using the same, and production thereof | Nobuyuki Hayashi, Koichi Kamijima, Takayuki Akimoto, Mitsuo Katayose, Hideo Hagiwara | 1992-05-05 |
| 5081236 | Electrophotographic plate containing naphthalocyanines which contain siloxy groups | Shigeru Hayashida | 1992-01-14 |
| 5075203 | Naphthalocyanine derivatives, production thereof and optical recording medium using the same | Mitsuo Katayose, Nobuyuki Hayashi, Takayuki Akimoto, Koichi Kamijima, Hideo Hagiwara | 1991-12-24 |
| 5039600 | Naphthalocyanine derivatives, production thereof, optical recording medium using the same, and production thereof | Nobuyuki Hayashi, Koichi Kamijima, Takayuki Akimoto, Mitsuo Katayose, Hideo Hagiwara | 1991-08-13 |
| 5034309 | Naphthalocyanine derivatives and their use in optical recording medium | Shigeru Hayashida, Nobuyuki Hayashi, Hideo Hagiwara, Mitsuo Katayose, Koichi Kamijima +4 more | 1991-07-23 |
| 5021563 | Metal naphthalocyanine derivative and process for producing the same | Shigeru Hayashida, Nobuyuki Hayashi, Yasushi Iwakabe, Noriyuki Kinjo, Shunichi Numata | 1991-06-04 |
| 4886721 | Electrophotographic plate by use of metal naphthalocyanine derivative | Shigeru Hayashida, Nobuyuki Hayashi, Yasushi Iwakabe, Noriyuki Kinjo, Shunichi Numata | 1989-12-12 |
| 4842970 | Electrophotographic plate containing a naphthalocyanine compound | Shigeru Hayashida, Nobuyuki Hayashi | 1989-06-27 |
| 4833264 | 5- or 6-alkoxycarbonyl-2,3-dicyanonaphthalenes | Shigeru Hayashida, Nobuyuki Hayashi | 1989-05-23 |
| 4749637 | Electrophotographic plate with silicon naphthalocyanine | Shigeru Hayashida | 1988-06-07 |
| 4490436 | Polymer filler particles with filler free coating | Masato Kawakami | 1984-12-25 |