Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5169987 | Squarlylium compound | Yutaka Akasaki, Akihiko Tokida, Kaoru Torikoshi, Tooru Ishii, Akira Imai | 1992-12-08 |
| 5047589 | Electrophotographic light-sensitive material containing squarylium compound | Yutaka Akasaki, Akihiko Tokida, Kaoru Torikoshi, Tooru Ishii, Akira Imai | 1991-09-10 |
| 5041665 | Process for preparing squarylium compounds | Yutaka Akasaki, Akihiko Tokida, Kaoru Torikoshi, Akira Imai | 1991-08-20 |
| 5024911 | Electrophotographic photoreceptor having an electric charge generating layer comprising a pyrylium compound | Yutaka Akasaki, Hidekazu Aonuma, Katsumi Nukada, Akihiko Tokita, Katsuhiro Sato +1 more | 1991-06-18 |
| 4833054 | Electrophotographic photoreceptor having a bisazo compound | Yutaka Akasaki, Katsuhiro Sato, Akihiko Tokita; | 1989-05-23 |