Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7732114 | Modified nigrosine, its production method, and toner for developing electrostatic charge images using this modified nigrosine | Toshiro Kogawara | 2010-06-08 |
| 6653040 | Electrophotographic carrier, developer using the same, and developing method | Katsunori Ohba, Toshiro Kogawara, Takeshi Isonaka | 2003-11-25 |
| 6455218 | Developer for electrostatic image development and image forming method using the same | Takeshi Isonaka, Toshiro Kogawara, Katsunori Ohba | 2002-09-24 |
| 6335139 | Toner for electrostatic image development and image forming method employing the same | Hideki Gambayashi, Masanobu Nakamura, Toshiro Kogawara | 2002-01-01 |
| 5302631 | Ink for jet printer | Yutaka Yamada, Isao Tabayashi, Sadahiro Inoue | 1994-04-12 |
| 5262264 | Combination of color toners for developing electrostatic latent image | Seiichi Shimizu, Yoshiyuki Iwanari, Masahiro Yoshida, Noboru Nakaibayashi | 1993-11-16 |
| 5017450 | Color toner composition for electrostatic developer | Yoshiyuki Iwanari, Seiichi Shimizu, Toshiro Kogawara | 1991-05-21 |
| 4931370 | Color toner composition for developing electrostatic images | Yoshiyuki Iwanari, Kinji Shinzo, Toshiro Kogawara, Syuuichi Yamazaki, Seiichi Shimizu +1 more | 1990-06-05 |