Issued Patents 2011
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7994970 | Positioning system, position information transmitter, communication terminal, and control method of the positioning system | Takamasa Kawaguchi, Yutaka Shimogaki, Hitoshi Ogasawara | 2011-08-09 |
| 7953408 | Message transmission system using an area address to transmit messages | Emiko Kobayashi, Minoru Koizumi, Katsumi Hanashima | 2011-05-31 |
| 7945614 | Space-time communication system | Hiroshi Saito, Takeshi Ishizaki, Junji Fukuzawa, Minoru Koizumi, Toshiichiro Sasaki +1 more | 2011-05-17 |