Issued Patents All Time
Showing 26–42 of 42 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4622594 | Image recording apparatus | Takeshi Honjo, Yasumichi Suzuki, Naomi Takahata | 1986-11-11 |
| 4598323 | Image processing apparatus | Takeshi Honjo, Yasumichi Suzuki, Naomi Takahata | 1986-07-01 |
| 4554231 | Electrophotographic photosensitive member | Shozo Ishikawa, Kiyoshi Sakai, Minoru Mabuchi, Katsunori Watanabe | 1985-11-19 |
| 4500619 | Electrophotographic photosensitive member with oxadiazole containing disazo compound | Shozo Ishikawa, Kazuharu Katagiri, Katsunori Watanabe, Kiyoshi Sakai | 1985-02-19 |
| 4487824 | Electrophotographic photosensitive member containing a halogen substituted hydrazone | Kazuharu Katagiri, Katsunori Watanabe, Kiyoshi Sakai, Shozo Ishikawa | 1984-12-11 |
| 4485159 | Laminate type electrophotographic light-sensitive material | Katsunori Watanabe, Shigeto Ohta, Kiyoshi Sakai, Shozo Ishikawa | 1984-11-27 |
| 4471040 | Electrophotographic disazo photosensitive member | Kazuharu Katagiri, Katsunori Watanabe, Shozo Ishikawa | 1984-09-11 |
| 4419428 | Electrophotographic light-sensitive media having a dis-azo compound | Kazuharu Katagiri, Shozo Ishikawa, Katsunori Watanabe, Shigeto Ohta | 1983-12-06 |
| 4413045 | Multilayer electrophotographic photosensitive member comprises disazo charge generator layer, hydrazone transport layer | Shozo Ishikawa, Kazuharu Katagiri, Katsunori Watanabe, Kiyoshi Sakai | 1983-11-01 |
| 4399206 | Disazo electrophotographic photosensitive member | Kazuharu Katagiri, Katsunori Watanabe, Shozo Ishikawa | 1983-08-16 |
| 4399207 | Electrophotographic photosensitive member with hydrazone compound | Kiyoshi Sakai, Minoru Mabuchi, Shozo Ishikawa | 1983-08-16 |
| 4391889 | Electrophotographic photosensitive member with benzimidazole ring containing hydrazones | Minoru Mabuchi, Kiyoshi Sakai, Shozo Ishikawa, Yuji Egashira | 1983-07-05 |
| 4390611 | Electrophotographic photosensitive azo pigment containing members | Shozo Ishikawa, Kazuharu Katagiri, Katsunori Watanabe | 1983-06-28 |
| 4359513 | Electrophotographic light-sensitive disazo compounds having diphenylacrylonitrile group | Kazuharu Katagiri, Katsunori Watanabe, Shigeto Ohta, Shozo Ishikawa | 1982-11-16 |
| 4359515 | Disazo electrophotographic light-sensitive media | Kazuharu Katagiri, Katsunori Watanabe, Shigeto Ohta, Shozo Ishikawa | 1982-11-16 |
| 4356243 | Electrophotographic media with benzoxazole group containing dis-azo compound | Shozo Ishikawa, Kazuharu Katagiri, Katsunori Watanabe, Shigeto Ohta | 1982-10-26 |
| 4268595 | Electrostatic recording material and method for the production thereof | Kazuharu Katagiri, Shozo Ishikawa, Shigeto Ohta | 1981-05-19 |