Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4434506 | Circuit arrangement for protecting a control channel from jamming waves in a radio communication system | Ryuhei Fujiwara, Tomokazu Kai | 1984-02-28 |
| 4415770 | Malfunction detection system for a mobile radio telephone system | Tomokazu Kai | 1983-11-15 |