Issued Patents All Time
Showing 1–25 of 26 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5633758 | Variable magnification lens system | — | 1997-05-27 |
| 5623370 | Gradient index lens system | Satoshi Iwasaki, Sanae Watanabe, Kazuharu Kagoshima, Keijiro Sakamoto | 1997-04-22 |
| 5600489 | Copying zoom lens system | Hiroki Kinoshita | 1997-02-04 |
| 5548373 | Image reading apparatus | — | 1996-08-20 |
| 5416608 | Image reading apparatus | Kunihiko Konoma, Tetsuji Niikawa, Mitsutoshi Yagoto | 1995-05-16 |
| 5383059 | Nonvariable transverse magnification focussing method and lens systems | — | 1995-01-17 |
| 5345338 | Zoom lens system for use in a copying apparatus | Sanae Watanebe | 1994-09-06 |
| 5162844 | Image projection apparatus | — | 1992-11-10 |
| 5134522 | Projection lens system | — | 1992-07-28 |
| 5073015 | Zoom lens system | — | 1991-12-17 |
| 5063396 | Droplets jetting device | Shoko Shiokawa, Yoshikazu Matsui | 1991-11-05 |
| 5015077 | Zoom lens system for use in a microfilm projection apparatus | — | 1991-05-14 |
| 4981344 | Wide angle lens system for use in copying machine | — | 1991-01-01 |
| 4979806 | Zoom lens system | — | 1990-12-25 |
| 4959824 | Optical information record/pickup head assembly | Kouitirou Tutiyasu, Kazuyuki Yoshida, Mitsutoshi Yagoto | 1990-09-25 |
| 4934794 | Zoom lens system for use in microfilm projection apparatus | — | 1990-06-19 |
| 4909615 | Zoom lens system for use in an image projecting apparatus with kohler illumination | — | 1990-03-20 |
| 4887891 | Zoom lens system for use in microfilm projection apparatus | — | 1989-12-19 |
| 4865431 | Zoom lens system for use in an image projecting apparatus with Kohler illumination | — | 1989-09-12 |
| 4838667 | Zoom lens system for use in microfilm projection apparatus | — | 1989-06-13 |
| 4824236 | Zoom lens system for use in microfilm projection apparatus | — | 1989-04-25 |
| 4805999 | Variable magnification lens system with constant object-image distance | Kunihiko Konoma | 1989-02-21 |
| 4790638 | Lens system for projecting images of microfilm | Satoshi Iwasaki, Kunihiko Konoma | 1988-12-13 |
| 4740067 | Projection lens system | — | 1988-04-26 |
| 4583846 | Slit exposure type copying machine capable of copying with anamorphic magnification | Hiromu Nakamura, Haruhiro Hyodo, Muneo Kuroda, Akiyoshi Hamada, Hiroaki Nakauchi +1 more | 1986-04-22 |