Issued Patents All Time
Showing 76–88 of 88 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5486438 | Electrophotographic photoconductor | Masayuki Shoshi, Masakatsu Shimoda, Akiko Konishi, Megumi Kawahara, Akio Kojima +1 more | 1996-01-23 |
| 5387487 | Electrophotographic photoconductor | Masayuki Shoshi, Masakatsu Shimoda, Masahiro Taniucchi, Akio Kojima, Masao Yoshikawa | 1995-02-07 |
| 5350459 | Organic photovoltaic element | Masao Yoshikawa, Kazukiyo Nagai, Hiroshi Ikuno | 1994-09-27 |
| 5350653 | Electrophotographic photoconductor | Masayuki Shoshi, Masakatsu Shimoda, Akiko Konishi, Megumi Kawahara, Akio Kojima +1 more | 1994-09-27 |
| 5264048 | Photoelectric conversion device | Masao Yoshikawa | 1993-11-23 |
| 5126802 | Electric device | Masao Yoshikawa | 1992-06-30 |
| 5006915 | Electric device and photoelectric conversion device comprising the same | Masao Yoshikawa | 1991-04-09 |
| 4992109 | Photoelectric conversion element | Masao Yoshikawa, Akio Kojima, Masayuki Shoshi, Masafumi Ohta | 1991-02-12 |
| D311353 | Clock movement | Katsuhiro Hatano | 1990-10-16 |
| 4874481 | N,N'-diphenylbenzidine polymer and method of producing the same | Masao Yoshikawa, Akio Kojima | 1989-10-17 |
| 4672149 | Photoelectric transducer element | Masao Yoshikawa, Akio Kojima, Masaomi Sasaki | 1987-06-09 |
| 4634650 | Toner for developing latent electrostatic images, containing charge control agent | — | 1987-01-06 |
| 4191067 | Ratchet feed mechanism | Masaaki Oishi, Itaru Ashida | 1980-03-04 |