Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7277063 | Variable directivity antenna and variable directivity antenna system using the antennas | Toshiaki Shirosaka, Shingo Fujisawa, Toshio Fujita, Eiji Shibuya | 2007-10-02 |
| 7084829 | Signal receiving system | Toshiaki Shirosaka, Toshio Fujita, Shingo Fujisawa | 2006-08-01 |
| 7071891 | Antenna apparatus | Toshiaki Shirosaka, Toshio Fujita | 2006-07-04 |
| 6965353 | Multiple frequency band antenna and signal receiving system using such antenna | Toshiaki Shirosaka, Toshio Fujita, Shingo Fujisawa, Eiji Shibuya | 2005-11-15 |
| 6914558 | Variable directivity antenna apparatus and receiver system using such antenna apparatus | Toshiaki Shirosaka, Toshio Fujita, Eiji Shibuya | 2005-07-05 |
| 6774863 | Antenna system | Toshiaki Shirosaka, Eiji Shibuya, Shingo Fujisawa, Shotaro Horii | 2004-08-10 |