Issued Patents All Time
Showing 26–50 of 51 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5047305 | Electrostatic-image developing polyester toner with release agent | Masafumi Uchida, Hiroyuki Takagiwa, Akitoshi Matsubara, Toshiko Yajima | 1991-09-10 |
| 5021317 | Electrostatic latent image developer with toner particles surface treated with a polysiloxane having ammonium salt functional groups | Akitoshi Matsubara, Hiroyuki Takagiwa, Hiroya Masaki | 1991-06-04 |
| 4960664 | Developer composition for developing electrostatic image and toner image forming process | Hiroyuki Yamada, Hiroyuki Takagiwa, Hiroya Masaki, Takahira Kasuya, Masafumi Uchida +1 more | 1990-10-02 |
| 4943507 | Toner for developing electrostatic latent image and method for developing electrostatic latent image with the same | Kenzi Tsuzita, Hiroyuki Takagiwa, Kunio Shigeta, Hiroya Masaki | 1990-07-24 |
| 4935327 | Polyester toner with antioxidant for development of electrostatic latent image | Yoshio Takizawa, Akitoshi Matsubara, Satoru Ikeuchi | 1990-06-19 |
| D307576 | Programmable controller | Yoshinori Abe, Muneaki Inoue, Kazuhiro Hata | 1990-05-01 |
| 4877704 | Process for developing latent electrostatic image using toner containing polyester resin | Hiroyuki Takagiwa, Meizo Shirose, Kunio Akimoto, Masafumi Uchida | 1989-10-31 |
| 4770969 | Heat fusible toners for developing electrostatic images | Meizo Shirose, Kenichi Kishi, Kiyoshi Tamaki, Akitoshi Matsubara | 1988-09-13 |
| 4725521 | Carrier for developing electrostatic image | Kunio Shigeta, Kenzi Tsuzita, Hiroyuki Nomori | 1988-02-16 |
| 4693952 | Toner for developing electrostatic latent image | Fumio Koizumi, Takahira Kasuya | 1987-09-15 |
| 4652509 | Toner for developing electrostatic latent image | Meizo Shirose, Hiroshi Tsuchiya, Tadashi Kaneko | 1987-03-24 |
| 4637973 | Image forming process for electrophotography | Kunio Shigeta, Yoko Yamamoto | 1987-01-20 |
| 4614700 | Image forming process with magnetic brush development | Yoko Yamamoto, Kunio Shigeta | 1986-09-30 |
| 4579802 | Method of fixing toner image | Ken-ichi Kishi, Meizo Shirose, Kenzi Tuzita, Takahira Kasuya | 1986-04-01 |
| 4557991 | Toner for development of electrostatic image containing binder resin and wax | Hiroyuki Takagiwa, Meizo Shirose, Naomi Inaba, Megumi Seki | 1985-12-10 |
| 4537847 | Disazo photoreceptors for electrophotography | Kiyoshi Sawada, Akira Kinoshita, Tawara Komamura, Satoshi Goto, Osamu Sasaki | 1985-08-27 |
| 4514486 | Method for the formation of images | Meizo Shirose, Kunio Ito, Hiroyuki Takagiwa, Kouichi Gunzi | 1985-04-30 |
| 4495261 | Electrophotographic substituted p,p'-bisazo diphenyl acrylonitrile compounds for photoreceptors | Tawara Komamura, Kiyoshi Sawada, Ssamu Sasaki, Satoshi Goto, Akira Kinoshita | 1985-01-22 |
| 4426432 | Electrophotosensitive receptor with trisazo compound | Kiyoshi Sawada, Satoshi Goto, Osamu Sasaki, Tawara Komamura | 1984-01-17 |
| 4425422 | Formation of color photographic image with azo dye containing alkoxy or thioalkoxy metal chelating group | Tawara Komamura, Ryuichiro Kobayashi | 1984-01-10 |
| 4421846 | Photographic element with reducible metal complex that releases photographically useful compound | Satoru Ikeuchi, Masaru Kanbe, Ryuichiro Kobayashi, Shunji Suginaka, Noboru Mizukura | 1983-12-20 |
| 4416979 | Photographic light-sensitive element with nitrophyenylazo metal complexable dye | Tawara Komamura, Ryuichiro Kobayashi | 1983-11-22 |
| 4368260 | Photographic light sensitive element | Tawara Komamura, Ryuichiro Kobayashi | 1983-01-11 |
| 4256831 | Light-sensitive photographic element comprising a magenta image dye-providing compound | Masaru Kanbe, Kazumasa Watanabe, Morito Uemura, Ryuichiro Kobayashi, Tatsuhiko Kobayashi | 1981-03-17 |
| 4247629 | Light-sensitive photographic element comprising a cyan image dye-providing compound | Masaru Kanbe, Kazumasa Watanabe, Morito Uemura, Ryuichiro Kobayashi, Tatsuhiko Kobayashi | 1981-01-27 |