Issued Patents All Time
Showing 26–29 of 29 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4306351 | Method for producing a semiconductor laser element | Sigeo Ohsaka, Kanji Fujiwara | 1981-12-22 |
| 4277165 | Photocopying machine equipped with variable magnification arrangement | Kenichi Wada, Hiroshi Murasaki, Yuji Enoguchi | 1981-07-07 |
| 4264186 | Electrophotographic copying apparatus | Kidetoshi Kawabata, Masaya Ogawa, Tatsuya Okada | 1981-04-28 |
| 4244647 | Erasing device for image transfer type copying apparatus | Yoshitaro Furukawa | 1981-01-13 |