Issued Patents 1989
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4887102 | Image forming apparatus | Tatuya Kobayashi | 1989-12-12 |
| 4874481 | N,N'-diphenylbenzidine polymer and method of producing the same | Tetsuro Suzuki, Akio Kojima | 1989-10-17 |
| 4872418 | Magnet roll developing apparatus | Kimio Nakahata | 1989-10-10 |
| 4831408 | Electrophotographic apparatus capable of forming images in different colors | Tatsuya Kobayashi, Takashi Saito | 1989-05-16 |