Issued Patents All Time
Showing 1–13 of 13 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7779442 | Information distribution system | Keiji Fukuzawa, Katsumi Ohishi, Kenji Inose | 2010-08-17 |
| 7233804 | Radio communication system, and apparatus, method, and computer program for said radio communication system | Shigeru Sugaya | 2007-06-19 |
| 6980819 | Radio communication system, and apparatus, method, and computer program for said radio communication system | Shigeru Sugaya | 2005-12-27 |
| 6779195 | Signal processing apparatus and signal receiving apparatus | Katsumi Oishi, Keiji Fukuzawa | 2004-08-17 |
| 6587503 | Information processing apparatus and method | Isao Takeuchi, Taku Yamagata | 2003-07-01 |
| 4958381 | Two way communication system | — | 1990-09-18 |
| 4866515 | Passenger service and entertainment system for supplying frequency-multiplexed video, audio, and television game software signals to passenger seat terminals | Koichi Tagawa, Atsushi Matsuzaki, Yoshiyuki Kondo | 1989-09-12 |
| 4787085 | Digital signal transmitting system | Kohichi Suto, Hisayoshi Sugiyama, Akira Sakamoto, Takeshi Fukami, Toshiro Terauchi | 1988-11-22 |
| 4684981 | Digital terminal address transmitting for CATV | Yasuhiro Hideshima, Etsumi Fujita | 1987-08-04 |
| 4683586 | Scrambling system for an audio frequency signal | Akira Sakamoto, Takeshi Fukami, Takehiro Sugita | 1987-07-28 |
| 4635274 | Bidirectional digital signal communication system | Ichiro Kubota | 1987-01-06 |
| 4600941 | Scrambling system for audio frequency signals | Akira Sakamoto, Toshihiko Waku, Takeshi Fukami, Michimasa Komatsubara | 1986-07-15 |
| 4298989 | Tuning apparatus | Noboru Someno, Michimasa Komatsubara | 1981-11-03 |