Issued Patents All Time
Showing 101–118 of 118 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5668673 | Catadioptric reduction projection optical system | Yutaka Suenaga, Toshiro Ishiyama, Kiyoshi Hayashi | 1997-09-16 |
| 5626641 | Method of manufacturing a glass blank used for optical glass elements | Tadayoshi Yonemoto, Takashi Inoue, Toshihiko Muroi | 1997-05-06 |
| 5579167 | Super-wide field eyepiece | Yasuhiro Oomura | 1996-11-26 |
| 5477388 | Inverse telescopic wide angle lens | Toshiro Ishiyama, Yutaka Suenaga | 1995-12-19 |
| 5322541 | Method of producing glass blank | Shoji Nakamura, Tadayoshi Yonemoto, Masaaki Sunohara, Tadao Shioyama, Noriyuki Kawata | 1994-06-21 |
| 5321554 | Inverse telescopic wide angle lens | Toshiro Ishiyama | 1994-06-14 |
| 5237470 | Magnetic tape cassette loading/unloading apparatus which selectively loads different size cassettes | Kenji Sasaki, Hitoshi Minabe, Tetsurou Tanaka, Keiji Sakamoto | 1993-08-17 |
| 5175652 | Imaging optical system | — | 1992-12-29 |
| 5091934 | Tone modification system for telephone system with clock | — | 1992-02-25 |
| 5088768 | Structure of impact absorbing steering apparatus | Tomoyuki Maruyama | 1992-02-18 |
| 4946265 | Microscope whose enlargement magnification is changeable | Reiko Ohyama | 1990-08-07 |
| 4897744 | Apparatus for selectively loading small or large tape cassettes | Tetsuro Tanaka, Jirou Kajino, Fuminari Saito, Hironori Honsho | 1990-01-30 |
| 4890505 | Structure of telescopic steering apparatus for a vehicle | Satoshi Kinoshita, Shyogo Kachi | 1990-01-02 |
| 4666256 | Microscope objective lens | Takashi Mori | 1987-05-19 |
| 4592624 | Objective lens for microscope of low magnification | Kazuo Ushida, Masashi Tanaka | 1986-06-03 |
| 4588264 | Microscope objective lens | — | 1986-05-13 |
| 4316653 | Condenser optical system for a microscope | — | 1982-02-23 |
| 4186993 | Epidark illumination system | Takeshi Sudo | 1980-02-05 |