Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4741006 | Up/down counter device with reduced number of discrete circuit elements | Akira Yamaguchi, Koichi Satoh, Hiroshi Shigehara | 1988-04-26 |
| 4704545 | Switched capacitor rectifier circuit | Yutaka Tanaka | 1987-11-03 |
| 4599580 | Circuit for comparing two or more frequencies | Akira Yamaguchi, Hiroshi Shigehara | 1986-07-08 |