Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5930212 | Positioning control system including a servo-error signal generating circuit | Akira Minami, Shigeyoshi Tanaka, Michio Matsuura, Hiromichi Kuwano | 1999-07-27 |
| 5909415 | Positioning control system which generates a servo-error signal in accordance with a difference between detection currents | Akira Minami, Shigeyoshi Tanaka, Michio Matsuura, Hiromichi Kuwano | 1999-06-01 |
| 5812503 | Positioning control system having an optical beam and a servo-error signal generating circuit for accurately irradiating a desired position | Akira Minami, Shigeyoshi Tanaka, Michio Matsuura, Hiromichi Kuwano | 1998-09-22 |
| 5636191 | Positioning control system utilizing optical beam having servo-error signal generating circuit | Akira Minami, Shigeyoshi Tanaka, Michio Matsuura, Hiromichi Kuwano | 1997-06-03 |
| 5566143 | Positioning control system utilizing optical beam | Akira Minami, Shigeyoshi Tanaka, Michio Matsuura, Hiromichi Kuwano | 1996-10-15 |