Issued Patents All Time
Showing 26–28 of 28 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4835082 | Toner for electrophotography | Masumi Koishi, Nobuyuki Igarashi, Akira Arikawa | 1989-05-30 |
| 4592977 | Lithographic printing plate | Tsutomu Naganuma, Sigeru Hirayama, Hiroji Kumagai, Tsuneo Tanaka, Isao Kumano | 1986-06-03 |
| 4507374 | Electrophotographic recording medium containing .tau. and .eta. metal-free phthalocyanine | Atsushi Kakuta, Hiroyuki Oka, Shigeo Suzuki, Kotaro Araya, Yasuki Mori +3 more | 1985-03-26 |