Issued Patents All Time
Showing 1–16 of 16 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| RE37429 | Member for developing electrostatic latent images | Yasuo Hirano | 2001-10-30 |
| 5881344 | Image forming apparatus and charging device thereof | Junji Kurokawa, Masako Chiba, Toshio Nakahara | 1999-03-09 |
| 5786091 | Charge roller for an image forming apparatus | Junji Kurokawa, Masako Chiba, Toshio Nakahara | 1998-07-28 |
| 5761581 | Image forming apparatus charging member formed of sequential overlying layers of elastic material | — | 1998-06-02 |
| 5741616 | Method of developing latent electrostatic images and developer-bearing member | Yasuo Hirano, Jun Aoto, Koji Suzuki, Hiroshi Takashima, Shigekazu Enoki +2 more | 1998-04-21 |
| 5689770 | Image forming apparatus which maintains a temperature of a charge roller | Junji Kurokawa, Masako Chiba, Toshio Nakahara | 1997-11-18 |
| 5499078 | Charge roller and image forming apparatus using the same | Junji Kurokawa, Norimasa Sohmiya | 1996-03-12 |
| 5497219 | Charge rollers having improved layer structure and/or surface characteristics in an image forming apparatus | Junji Kurokawa, Masaki Sekizawa | 1996-03-05 |
| 5479243 | Image forming apparatus and charging device thereof | Junji Kurokawa, Masako Chiba, Toshio Nakahara | 1995-12-26 |
| 5384628 | Developing device for image forming equipment | Nobuo Takami, Kazuyuki Sugihara, Takayuki Maruta, Noboru Sawayama, Kaoru Yoshimatsu +2 more | 1995-01-24 |
| 4994319 | Member for developing electrostatic latent images | Yasuo Hirano | 1991-02-19 |
| 4958193 | Member for developing electrostatic latent images | Yasuo Hirano | 1990-09-18 |
| 4908665 | Developer carrier containing electrically conductive filler present in a resin coating layer for use in dry-type image developing device | Fuchio Takeda, Yasutaka Nakamura | 1990-03-13 |
| 4833058 | Developing apparatus | Yasuo Hirano, Motoi Orihara | 1989-05-23 |
| 4702964 | Fixing roll | Yasuo Hirano | 1987-10-27 |
| 4603087 | Fixing roll | Hideaki Ema, Yasuo Hirano | 1986-07-29 |