Issued Patents All Time
Showing 1–19 of 19 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5958637 | Electrophotographic photoreceptor and coating solution for production of charge transport layer | Yoshii Morishita, Megumi Matsui, Shigeru Hayashida, Susumu Sakio | 1999-09-28 |
| 5938980 | Phthalocyanine composition, process for preparing the same, electrophotographic photoreceptor using the same and coating solution for charge generation layer containing the same | Yoshii Morishita, Megumi Matsui, Shigeru Hayashida, Mikio Itagaki | 1999-08-17 |
| 5837411 | Phthalocyanine electrophotographic photoreceptor for charge generation layer | Yoshii Morishita, Megumi Matsui, Shigeru Hayashida, Mikio Itagaki | 1998-11-17 |
| 5626999 | Phthalocyanine composition, process for preparing the same and electrophotographic photoreceptor using the same | Mikio Itagaki, Shigeru Hayashida, Megumi Matsui, Hiroko Ishikawa, Yoshii Morishita | 1997-05-06 |
| 5534375 | Composition for forming charge transport layer and electrophotographic member containing alkoxybenzene | Susumu Kaneko, Kouji Ohkoshi, Keiichi Endo, Seiji Miyaoka, Megumi Matsui +2 more | 1996-07-09 |
| 5496672 | Coating solution for charge generation layer and electrophotographic photoreceptor using same | Shigeru Hayashida, Megumi Matsui, Mikio Itagaki | 1996-03-05 |
| 5494767 | Phthalocyanine composition, process for preparing the same and electrophotographic photoreceptor using the same | Mikio Itagaki, Shigeru Hayashida, Megumi Matsui, Hiroko Ishikawa, Yoshii Morishita | 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, Shigeru Hayashida +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, Shigeru Hayashida, Mikio Itagaki | 1995-09-12 |
| 5304445 | Phthalocyanine composition, process for preparing the same and electrophotographic photoreceptor using the same | Mikio Itagaki, Shigeru Hayashida, Megumi Matsui, Hiroko Ishikawa, Yoshii Morishita | 1994-04-19 |
| 5284943 | Tatraazaporphin, process for producing the same, as well as optical recording media using the same and production processes thereof | Seiji Tai, Nobuyuki Hayashi, Koichi Kamijima, Mitsuo Katayose, Hideo Hagiwara | 1994-02-08 |
| 5268485 | Naphthalocyanine derivatives, production thereof and optical recording medium using the same | Mitsuo Katayose, Nobuyuki Hayashi, Seiji Tai, Koichi Kamajima, Hideo Hagiwara | 1993-12-07 |
| 5233089 | Enamine derivatives | Yasuo Katsuya, Yoshii Morishita, Yasushi Shinbo, Akira Kageyama, Shigeru Hayashida | 1993-08-03 |
| 5217856 | Tetraazaporphin, process for producing the same, as well as optical recording media using the same and production processes thereof | Seiji Tai, Nobuyuki Hayashi, Koichi Kamijima, Mitsuo Katayose, Hideo Hagiwara | 1993-06-08 |
| 5214188 | 2,3-dicyanonaphthalene derivatives | Seiji Tai, Shigeru Hayashida, Nobuyuki Hayashi, Hideo Hagiwara, Mitsuo Katayose +4 more | 1993-05-25 |
| 5110968 | Naphthalocyanine derivatives, production thereof, optical recording medium using the same, and production thereof | Seiji Tai, Nobuyuki Hayashi, Koichi Kamijima, Mitsuo Katayose, Hideo Hagiwara | 1992-05-05 |
| 5075203 | Naphthalocyanine derivatives, production thereof and optical recording medium using the same | Mitsuo Katayose, Nobuyuki Hayashi, Seiji Tai, Koichi Kamijima, Hideo Hagiwara | 1991-12-24 |
| 5039600 | Naphthalocyanine derivatives, production thereof, optical recording medium using the same, and production thereof | Seiji Tai, Nobuyuki Hayashi, Koichi Kamijima, Mitsuo Katayose, Hideo Hagiwara | 1991-08-13 |
| 5034309 | Naphthalocyanine derivatives and their use in optical recording medium | Seiji Tai, Shigeru Hayashida, Nobuyuki Hayashi, Hideo Hagiwara, Mitsuo Katayose +4 more | 1991-07-23 |