Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7486249 | Antenna | Toshio Fujita | 2009-02-03 |
| 7277063 | Variable directivity antenna and variable directivity antenna system using the antennas | Toshiaki Shirosaka, Toshio Fujita, Kiyotaka Tatekawa, Eiji Shibuya | 2007-10-02 |
| 7205955 | Antenna | Toshiaki Shirosaka | 2007-04-17 |
| 7084829 | Signal receiving system | Toshiaki Shirosaka, Toshio Fujita, Kiyotaka Tatekawa | 2006-08-01 |
| 6965353 | Multiple frequency band antenna and signal receiving system using such antenna | Toshiaki Shirosaka, Toshio Fujita, Kiyotaka Tatekawa, Eiji Shibuya | 2005-11-15 |
| 6933907 | Variable directivity antenna and variable directivity antenna system using such antennas | Toshiaki Shirosaka | 2005-08-23 |
| 6774863 | Antenna system | Toshiaki Shirosaka, Kiyotaka Tatekawa, Eiji Shibuya, Shotaro Horii | 2004-08-10 |