Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9575389 | Light modulator and exposure head | Masahide Okazaki | 2017-02-21 |
| 8784675 | Optical device, a method of manufacturing optical device, and exposure apparatus | Masahide Okazaki | 2014-07-22 |
| 8773751 | Optical device, exposure apparatus and laser apparatus | Masahide Okazaki | 2014-07-08 |
| 8175422 | Optical modulator | Masahide Okazaki | 2012-05-08 |
| 5153860 | Optical pickup apparatus for detecting and correcting focusing and tracking errors in detected recorded signals | Hiroshi Sunagawa, Hiroshi Nishihara | 1992-10-06 |
| 4885732 | Optical pickup apparatus for detecting and correcting focusing and tracking errors in detected recorded signals | Hiroshi Sunagawa, Hiroshi Nishihara | 1989-12-05 |
| 4868803 | Magneto-optic pickup head including tracking and focusing error correction | Hiroshi Sunagawa, Hiroshi Nishihara | 1989-09-19 |
| 4859033 | Method of producing optical head assembly | Keizo Kono, Mitsushige Kondou, Natsuro Tsubouchi, Shiro Hine, Hiroshi Nishihara | 1989-08-22 |
| 4833561 | Pickup apparatus for magneto-optical recording medium | Hiroshi Sunagawa, Hiroshi Nishihara | 1989-05-23 |
| 4778991 | Light beam scanning read-out apparatus and recording apparatus | Nobuharu Nozaki, Hiroshi Nishihara | 1988-10-18 |
| 4779259 | Optical head assembly with efficient light source coupling surface and method of construction | Keizo Kono, Mitsushige Kondou, Natsuro Tsubouchi, Shiro Hine, Hiroshi Nishihara | 1988-10-18 |