Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5024912 | 5H-dibenzo(A,D) cycloheptanylidene derivative and 5H-dibenzo (A,D) cycloheptenylidene derivative, and electrophotographic photosensitive member using the same | Toshihiro Kikuchi, Takao Takiguchi, Koichi Suzuki, Masakazu Matsumoto | 1991-06-18 |