Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6819516 | WUS (unsafe) detection (kick back sensing) | Kaori Ichikawa | 2004-11-16 |
| 6236524 | Adjustable impedance booster | Bernard Robert Gregoire, Jr. | 2001-05-22 |
| 5930212 | Positioning control system including a servo-error signal generating circuit | Akira Minami, Shigeyoshi Tanaka, Michio Matsuura, Kazuyuki Tamanoi | 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, Kazuyuki Tamanoi | 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, Kazuyuki Tamanoi | 1998-09-22 |
| 5636191 | Positioning control system utilizing optical beam having servo-error signal generating circuit | Akira Minami, Shigeyoshi Tanaka, Michio Matsuura, Kazuyuki Tamanoi | 1997-06-03 |
| 5566143 | Positioning control system utilizing optical beam | Akira Minami, Shigeyoshi Tanaka, Michio Matsuura, Kazuyuki Tamanoi | 1996-10-15 |
| 5499028 | Analog/digital converter | Hisashi Tahara | 1996-03-12 |
| 4954766 | Power supply circuit and semiconductor integrated circuit device using it | Shuichi Ishikawa | 1990-09-04 |
| 4901132 | Semiconductor integrated circuit with switching bipolar transistors having high withstand voltage capability | — | 1990-02-13 |
| 4857780 | High withstand voltage output | — | 1989-08-15 |