Issued Patents 1994
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5306588 | Treated silica fine powder and toner for developing electrostatic images | Katsuhiko Tanaka, Tsuyoshi Takigushi | 1994-04-26 |
| 5288579 | Developer for developing electrostatic image, image forming apparatus, apparatus unit and facsimile apparatus | Katsuhiko Tanaka, Kazuyoshi Hagiwara, Tsuyoshi Takiguchi | 1994-02-22 |