Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5889748 | Object lens and optical head for reproducing data from optical disks in different thickness of substrate | Takeshi Shimano, Masayuki Inoue, Akira Arimoto, Hiroyuki Minemura, Hideaki Koyanagi | 1999-03-30 |
| 4926195 | Image recording apparatus | Takashi Murahashi, Toshihiko Nakazawa, Toshihiro Takesue, Toshihiro Motoi | 1990-05-15 |
| 4802721 | Scanning optical system | — | 1989-02-07 |
| 4767201 | Wide angle lens | Tomoko Wakabayashi, Hiroyuki Yamazaki | 1988-08-30 |
| 4688903 | Wide angle lens | Hiroyuki Yamazaki, Tomoko Wakabayashi | 1987-08-25 |
| 4501475 | Zoom lens | Shozo Ishiyama | 1985-02-26 |
| 4276854 | Apparatus for detecting toner density | Yasuhiko Tanaka, Isao Kobayashi, Ken Nakamura | 1981-07-07 |
| 4273843 | Method of detecting toner concentration in electrophotographic copying machine | Kiyoshi Kimura | 1981-06-16 |