Issued Patents All Time
Showing 51–75 of 76 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7072673 | Radio handset and position location system | Katsuhiko Tsunehara, Kenzaburo Fujishima, Koji Watanabe | 2006-07-04 |
| 7016653 | Radio terminal | Katsuhiko Tsunehara | 2006-03-21 |
| 7013111 | Wireless communication apparatus | Kenichi Mizugaki, Atsushi Ogino, Kenzaburo Fujishima | 2006-03-14 |
| 7013147 | Wireless positioning means, wireless positioning apparatus and mobile position control center apparatus | Nobukazu Doi | 2006-03-14 |
| 6990351 | Equipment for the calculation of mobile handset position | Katsuhiko Tsunehara | 2006-01-24 |
| 6990345 | Method and apparatus for wireless position location | Kenzaburo Fujishima | 2006-01-24 |
| 6950661 | Location detection method, location detection apparatus and location detection program | Koji Watanabe, Katsuhiko Tsunehara, Kenzaburo Fujishima | 2005-09-27 |
| 6928292 | Mobile handset with position calculation function | Katsuhiko Tsunehara | 2005-08-09 |
| 6900753 | Method for measuring distance and position using spread spectrum signal, and an equipment using the method | Katsuhiko Tsunehara, Nobukazu Doi, Tomoaki Ishifuji | 2005-05-31 |
| 6889051 | Method and apparatus for measuring transmitting time offset of a base station | Atsushi Ogino, Tomoaki Ishifuji, Kenzaburo Fujishima | 2005-05-03 |
| 6865394 | Location detection method, location detection system and location detection program | Atsushi Ogino, Tomoaki Ishifuji | 2005-03-08 |
| 6804216 | Code division multiple access communication method using dynamic code assignment, and a base station performing the method | Nobukazu Doi | 2004-10-12 |
| 6758262 | Heat sink, method for manufacturing same, and pressing jig | Kenya Kawabata, Izumi Nakajima, Takeshi Hyotani, Takashi Mori, Hajime Noda +1 more | 2004-07-06 |
| 6704547 | Wireless communication base station transmission timing offset correction system | Tomoaki Ishifuji, Nobukazu Doi | 2004-03-09 |
| 6694142 | Wireless terminal positioning method and apparatus | Ayumu Koide, Katsuhiko Tsunehara, Nobukazu Doi | 2004-02-17 |
| 6671649 | Position calculation method and position calculation apparatus | Tomoaki Ishifuji, Takashi Yano, Kenzaburo Fujishima | 2003-12-30 |
| 6657579 | Method for measuring distance and position using spread spectrum signal, and an equipment using the method | Katsuhiko Tsunehara, Nobukazu Doi, Tomoaki Ishifuji | 2003-12-02 |
| 6647276 | Antenna unit and radio base station therewith | Nobukazu Doi, Toshiro Suzuki, Yuji Ishida, Takashi Inoue, Sumaru Niida | 2003-11-11 |
| 6640107 | Wireless location handset apparatus | Katsuhiko Tsunehara | 2003-10-28 |
| 6597678 | Radio communication system using adaptive array antenna | Nobukazu Doi | 2003-07-22 |
| 6556943 | Position calculation method and position calculation apparatus | Tomoaki Ishifuji, Takashi Yano, Kenzaburo Fujishima | 2003-04-29 |
| 6484034 | Radio handset and position location system | Katsuhiko Tsunehara, Kenzaburo Fujishima, Koji Watanabe | 2002-11-19 |
| 6459402 | Method for measuring distance and position using spectrum signal, and an equipment using the method | Katsuhiko Tsunehara, Nobukazu Doi, Tomoaki Ishifuji | 2002-10-01 |
| 6141335 | Radio communication system | Seishi Hanaoka, Nobukazu Doi, Takaki Uta | 2000-10-31 |
| 5914693 | Coaxial resonant slot antenna, a method of manufacturing thereof, and a radio terminal | Ken Takei, Hiroshi Okabe, Hiroshi Kishida, Kazuyuki Hori, Yoshitaka Imakado +1 more | 1999-06-22 |