Issued Patents All Time
Showing 26–45 of 45 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6965696 | Image processing device for image region discrimination | Mitsuru Tokuyama, Mihoko Tanimura, Masaaki Ohtsuki, Norihide Yasuoka | 2005-11-15 |
| 6833358 | Lacrimal secretion promoters or eye drops for treating keratoconjunctival failure containing as the active ingredient natriuretic peptides | Katsuhiko Nakata | 2004-12-21 |
| 6728425 | Image processing device | Mitsuru Tokuyama, Mihoko Tanimura, Norihide Yasuoka, Masaaki Ohtsuki, Hirohumi Sakita | 2004-04-27 |
| 6477282 | Image forming device | Masaaki Ohtsuki, Mitsuru Tokuyama, Mihoko Tanimura | 2002-11-05 |
| 6438274 | Image forming apparatus | Mitsuru Tokuyama, Masaaki Ohtsuki, Mihoko Tanimura | 2002-08-20 |
| 6324309 | Image processing apparatus | Mitsuru Tokuyama, Mihoko Tanimura, Masaaki Ohtsuki | 2001-11-27 |
| 6311027 | Image-forming apparatus which forms images by using a developer | Hirofumi Sakita, Syouichi Fujita, Hideji Saiko, Mitsuru Tokuyama, Hiroo Naoi +1 more | 2001-10-30 |
| 6266156 | Area judging apparatus | Mihoko Tanimura, Mitsuru Tokuyama, Masaaki Ohtsuki | 2001-07-24 |
| 6221846 | Ophthalmic drug compositions | Teruo Nishida, Katsuhiko Nakata | 2001-04-24 |
| 6040343 | Remedy for keratoconjunctival diseases | Katsuhiko Nakata, Takashi Hamano | 2000-03-21 |
| 5794097 | Image forming device with residual charge removal control | Kouji Shinkawa, Masaaki Ohtsuki, Mihoko Okada, Mitsuru Tokuyama, Hirofumi Sakita | 1998-08-11 |
| 5748794 | Image processing device | Hiroshi Maeda, Tatsuya Itoh | 1998-05-05 |
| 5515180 | Image processing device | Hiroshi Maeda, Toshio Yamagishi, Norihide Kunikawa, Toshihiro Okahashi, Tatsuya Itoh | 1996-05-07 |
| 5032870 | Electrophotographic apparatus | Yuhi Yui, Yukinori Andou, Kouichi Irihara | 1991-07-16 |
| 5019862 | Heat control for photoreceptor | Kunio Ohashi, Shoichi Nagata, Kazuki Wakita, Katsuhiro Nagayama, Tadashi Tonegawa | 1991-05-28 |
| 4910111 | Electrophotographic photoreceptor comprising amorphous silicon layer coated with amorphous inorganic material | Kazuki Wakita, Syoichi Nagata, Kunio Ohashi, Tadashi Tonegawa, Katsuhiro Nagayama | 1990-03-20 |
| 4843423 | Positive/negative image forming method and apparatus for electrophotographic image forming device | Ikuo Itoh | 1989-06-27 |
| 4757345 | Electrophotographic system | Kunio Ohashi, Kazuki Wakita, Tadashi Tonegawa, Syoichi Nagata, Kazuo Maeyama | 1988-07-12 |
| 4683186 | Doped amorphous silicon photoconductive device having a protective coating | Kunio Ohashi, Tadashi Tonegawa, Shoichi Nagata | 1987-07-28 |
| 4632894 | Photoconductive device having photoconductive layer containing hydroxyl radicals | Kunio Ohashi, Tadashi Tonegawa, Shoichi Nagata | 1986-12-30 |