Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8244096 | Optical disk device and advertising system | — | 2012-08-14 |
| 5937965 | Vehicle load responsive power steering system | Hiroshi Takagi, Shinichi Hagidaira | 1999-08-17 |
| 4845753 | Pitch detecting device | — | 1989-07-04 |
| 4754455 | Telephone signal transmission device | — | 1988-06-28 |
| 4688256 | Speech detector capable of avoiding an interruption by monitoring a variation of a spectrum of an input signal | — | 1987-08-18 |