Issued Patents All Time
Showing 1–19 of 19 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6033818 | Developing device for an image forming apparatus | Toshihiro Sugiyama, Kazuhiro Yuasa, Iwao Matsumae, Yoshiaki Tanaka, Hiroshi Hosokawa +6 more | 2000-03-07 |
| 5879752 | Method of coating a toner conveyor roller | Eisaku Murakami, Kazuhiro Yuasa, Iwao Matsumae, Yoshiaki Tanaka, Hiroshi Hosokawa +6 more | 1999-03-09 |
| 5845183 | Developing device for an image forming apparatus | Toshihiro Sugiyama, Kazuhiro Yuasa, Iwao Matsumae, Yoshiaki Tanaka, Hiroshi Hosokawa +6 more | 1998-12-01 |
| 5826144 | Developing device for an electrophotographic recording apparatus including bias control of a toner supplying roller | Eiji Takenaka, Kazuhiro Yuasa, Iwao Matsumae, Yoshiaki Tanaka, Hiroshi Hosokawa +6 more | 1998-10-20 |
| 5768665 | Image forming apparatus with bias control to prevent undesirable toner deposition | Tetsuo Yamanaka, Kazuhiro Yuasa, Iwao Matsumae, Yoshiaki Tanaka, Hiroshi Hosokawa +6 more | 1998-06-16 |
| 5708942 | Developing device for an image forming apparatus | Toshihiro Sugiyama, Kazuhiro Yuasa, Iwao Matsumae, Yoshiaki Tanaka, Hiroshi Hosokawa +6 more | 1998-01-13 |
| 5697026 | Developing device having the lengths of two toner transporting rollers and an image bearing member in specific relationships | Iwao Matsumae, Kazuhiro Yuasa, Yoshiaki Tanaka, Hiroshi Hosokawa, Mugijiroh Uno +6 more | 1997-12-09 |
| 5689782 | Developing apparatus for electronic photographic recording equipment, having two developer transfer rollers | Eisaku Murakami, Kazuhiro Yuasa, Iwao Matsumae, Yoshiaki Tanaka, Hiroshi Hosokawa +6 more | 1997-11-18 |
| 5666625 | Device for electrostatically developing a latent image on an image carrier | Satoru Komatsubara, Kazuhiro Yuasa, Iwao Matsumae, Yoshiaki Tanaka, Hiroshi Hosokawa +6 more | 1997-09-09 |
| 5625440 | Developing device having seals between a toner transport roller and the toner hopper which prevent toner leakage and scattering | Iwao Matsumae, Kazuhiro Yuasa, Yoshiaki Tanaka, Hiroshi Hosokawa, Mugijiroh Uno +6 more | 1997-04-29 |
| 5625438 | Toner, and devices for electrostatically depositing a uniform application thereof | Toshihiro Sugiyama, Kazuhiro Yuasa, Iwao Matsumae, Yoshiaki Tanaka, Hiroshi Hosokawa +6 more | 1997-04-29 |
| 5625441 | Developing device for an image forming apparatus | Toshihiro Sugiyama, Kazuhiro Yuasa, Iwao Matsumae, Yoshiaki Tanaka, Hiroshi Hosokawa +6 more | 1997-04-29 |
| 5617191 | Toner conveyor roller and image forming apparatus having the same | Eisaku Murakami, Kazuhiro Yuasa, Iwao Matsumae, Yoshiaki Tanaka, Hiroshi Hosokawa +6 more | 1997-04-01 |
| 5610693 | Developing device for an image forming apparatus | Toshihiro Sugiyama, Kazuhiro Yuasa, Iwao Matsumae, Yoshiaki Tanaka, Hiroshi Hosokawa +6 more | 1997-03-11 |
| 5552870 | Developing device for an image forming apparatus | Eisaku Murakami, Kazuhiro Yuasa, Iwao Matsumae, Yoshiaki Tanaka, Hiroshi Hosokawa +6 more | 1996-09-03 |
| 5548383 | Developing device for controlling pressure between toner conveying units | — | 1996-08-20 |
| 5489747 | Developing device for an image forming apparatus | Eiji Takenaka, Kazuhiro Yuasa, Iwao Matsumae, Yoshiaki Tanaka, Hiroshi Hosokawa +6 more | 1996-02-06 |
| 5486909 | Developing device for an image forming apparatus | Eiji Takenaka, Kazuhiro Yuasa, Iwao Matsumae, Yoshiaki Tanaka, Hiroshi Hosokawa +6 more | 1996-01-23 |
| 4788570 | Thin film developing device | Yoshihiro Ogata, Fuchio Takeda, Akito Yoshimaru, Toshio Kaneko, Toshihiko Takaya | 1988-11-29 |