Issued Patents All Time
Showing 201–225 of 248 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4841332 | Toner control for a developer device | Hisashi Shoji, Seiichiro Hiratsuka | 1989-06-20 |
| 4839692 | Apparatus for reproducing multi-color image | Hisashi Shoji, Seiichiro Hiratsuka | 1989-06-13 |
| 4814797 | Apparatus and method for controlling color dot size in multicolor image | Hisashi Shoji, Hiroshi Fuma | 1989-03-21 |
| 4803518 | Apparatus for forming a multi-color toner image | Hisashi Shoji, Seiichiro Hiratsuka | 1989-02-07 |
| 4803514 | Multi-color image forming method and apparatus | Seiichiro Hiratsuka, Hisashi Shoji | 1989-02-07 |
| 4797335 | Developing method for electrostatic images using composite component developer under non-contacting conditions | Seiichiro Hiratsuka, Hisashi Shoji | 1989-01-10 |
| 4794063 | Photoreceptor for electrophography, method for the production thereof and method of the image formation thereby | — | 1988-12-27 |
| 4792512 | Method of developing electrostatic images using two component developer and AC charging | Takashi Itoh, Ken Nakamura, Makoto Tomono | 1988-12-20 |
| 4789612 | Method for forming color image | Kunihisa Yoshino | 1988-12-06 |
| 4786939 | Image forming apparatus | — | 1988-11-22 |
| 4756985 | Method of forming multicolor images | Hisashi Shoji, Seiichiro Hiratsuka | 1988-07-12 |
| 4746589 | Developing method in electrophotography using oscillating electric field | Seiichiro Hiratsuka | 1988-05-24 |
| 4738911 | Photoreceptor for electrophotography and an image-forming process by the use thereof using color separation filter | Kunihisa Yoshino | 1988-04-19 |
| 4734735 | Image apparatus having a color separation function | — | 1988-03-29 |
| 4731313 | Apparatus for forming color images and method of use thereof | — | 1988-03-15 |
| 4721662 | Electrophotographic image forming method to produce multicolor images | — | 1988-01-26 |
| 4702987 | Developing method for electrophotography | Masakazu Fukuchi | 1987-10-27 |
| 4696880 | Method and apparatus for reproducing multi-color image and photoreceptor thereof | Hisashi Shoji, Seiichiro Hiratsuka | 1987-09-29 |
| 4679929 | Multiplex image reproducing apparatus | Hisashi Shoji, Seiichiro Hiratsuka | 1987-07-14 |
| 4680625 | Method and apparatus for multicolor image forming | Hisashi Shoji, Seiichiro Hiratsuka | 1987-07-14 |
| 4675267 | Method of developing electrostatic images using two component developer and AC charging | Takashi Itoh, Ken Nakamura, Makoto Tomono | 1987-06-23 |
| 4669864 | Image forming apparatus | Hisashi Shoji, Seiichiro Hiratsuka, Hiroshi Fuma, Shinobu Soma, Masahiko Itaya +2 more | 1987-06-02 |
| 4666804 | Method of and apparatus for image forming | Hisashi Shoji, Seiichiro Hiratsuka | 1987-05-19 |
| 4664505 | Electrostatic image reproducing apparatus | Masahiko Itaya | 1987-05-12 |
| 4641200 | Image reproducing apparatus with variable AC bias | Hisashi Shoji, Seiichiro Hiratsuka | 1987-02-03 |