Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| RE37669 | Method and apparatus for hand-off of call in progress | — | 2002-04-23 |
| 5369782 | Radio relay system, including interference signal cancellation | Kohji Ogawa, Sadayuki Tsukagoshi, Hiroyuki Kuroiwa, Masato Sato, Yasuhiro Ishizaki +2 more | 1994-11-29 |
| 5349694 | Radio relay system with a multiplex separation circuit and control for providing time delay multiplex operation of receiver and transmitter | Kohji Ogawa, Sadayuki Tsukagoshi, Hiroyuki Kuroiwa, Masato Sato, Yasuhiro Ishizaki +2 more | 1994-09-20 |
| 5267297 | Base station for a radio communication system | Kohji Ogawa, Sadayuki Tsukagoshi, Hiroyuki Kuroiwa, Masato Sato, Yasuhiro Ishizaki +2 more | 1993-11-30 |
| 5067171 | Method and apparatus for hand-off of call in progress | — | 1991-11-19 |
| 5033109 | Pocket transceiver | Hideyo Ono | 1991-07-16 |
| 4972346 | High-frequency signal booster | Koji Mihashi | 1990-11-20 |
| 4926421 | Mobile radio telephone system | Kazuo Mitsui, Masaharu Hirooka, Yasushi Ozu, Nagayasu Harada, Nobuhiro Kimura | 1990-05-15 |
| 4849963 | Cellular radio telephone enhancement circuit | Tomoji Ichinose, James Gerry FERGUSON | 1989-07-18 |
| 4754495 | Cell enhancer for cellular radio telephone system having bandpass filter arrangement | Tomoji Ichinose, Edward Weingart | 1988-06-28 |
| 4727590 | Mobile radio communication system with repeater station grid | Kohji Mihashi | 1988-02-23 |
| 4675632 | Coaxial line shape resonator with high dielectric constant | — | 1987-06-23 |