Issued Patents All Time
Showing 26–45 of 45 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5183719 | Electrophotographic material having an amorphous silicon photoconductive layer, an intermediate layer and a surface layer | Shigeru Yagi, Taketoshi Higashi, Masaki Yokoi | 1993-02-02 |
| 5166020 | Electrophotographic photoreceptor | Shigeru Yagi | 1992-11-24 |
| 5165991 | Dielectric member for receiving an electrostatic image | Shigeru Yagi | 1992-11-24 |
| 5162185 | Electrophotographic photoreceptor and process for producing the same | Shigeru Yagi | 1992-11-10 |
| 5139911 | Electrophotographic photoreceptor with two part surface layer | Shigeru Yagi, Masato Ono, Noriyoshi Takahashi, Masayuki Nishikawa, Kenichi Karakida | 1992-08-18 |
| 5132200 | Electrophotographic photoreceptor with porous anodized Al layer and process for producing the same | Shigeru Yagi, Ken Ebihara, Yasunobu Iwata | 1992-07-21 |
| 5122409 | Ink transfer medium of the electrically fusible type | Eiichi Akutsu, Hiroo Soga, Shigehito Ando | 1992-06-16 |
| 5120626 | Electrophotographic photoreceptor having an anodized Al-Mg or Al-Mn alloy substrate and process for producing the same | Shigeru Yagi, Ken Ebihara, Yasunobu Iwata | 1992-06-09 |
| 5104756 | Electrophotographic photoreceptor having anodized aluminum charge transporting layer | Shigeru Yagi, Ken-ichi Karakida | 1992-04-14 |
| 5098736 | Method for preparing electrophotographic photoreceptor | — | 1992-03-24 |
| 5094929 | Electrophotographic photoreceptor with amorphous carbon containing germanium | Shigeru Yagi, Masato Ono, Noriyoshi Takahashi, Masayuki Nishikawa, Ken-ichi Karakida | 1992-03-10 |
| 5082760 | Method for preparing an electrophotographic photoreceptor having a charge transporting layer containing aluminum oxide | Masayuki Nishikawa, Shigeru Yagi, Ken-ichi Karakida | 1992-01-21 |
| 5075187 | Electrophotographic photoreceptor with oxide of Al, Zr or Ta as charge transport layer | Ken-ichi Karakida, Susumu Honma, Masayuki Nishikawa, Shigeru Yagi | 1991-12-24 |
| 5059501 | Electrophotographic photoreceptor with overlayer of amorphous Si with N | Shigeru Yagi, Masato Ono, Noriyoshi Takahashi, Masayuki Nishikawa, Kenichi Karakida | 1991-10-22 |
| 5008170 | Photoreceptor for electrophotography | Kenichi Karakida, Shigeru Yagi, Masayuki Nishikawa, Te Nam Roh, Noriyoshi Takahashi +3 more | 1991-04-16 |
| 4965154 | Electrophotographic photoreceptor having surface layers | Kenichi Karakida, Shigeru Yagi, Masayuki Nishikawa, Te Nam Roh, Noriyoshi Takahashi +1 more | 1990-10-23 |
| 4965164 | Method for producing electrophotographic photoreceptor | Masayuki Nishikawa | 1990-10-23 |
| 4960662 | Positively and negatively chargeable electrophotographic photoreceptor | Masayuki Nishikawa, Yumiko Komori, Masaki Yokoi, Masato Ono, Noriyoshi Takahashi +2 more | 1990-10-02 |
| 4932859 | Electrophotographic photoreceptor having doped and/or bilayer amorphous silicon photosensitive layer | Shigeru Yagi, Masayuki Nishikawa, Te Nam Roh, Ken-ichi Karakida, Masahito Tokuhiro +1 more | 1990-06-12 |
| 4923773 | Multilayered electrophotographic photoreceptor of amorphous silicon having a surface layer of nitrogenated amorphous silicon | Shigeru Yagi, Masato Ono, Noriyoshi Takahashi, Masayuki Nishikawa, Kenichi Karakida | 1990-05-08 |