Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8059770 | Diversity receiving device | Kazuhiko Nakayama, Makoto Sasaki | 2011-11-15 |
| 8000673 | Diversity receiving device and receiving scheme switching method | Makoto Sasaki, Satoshi Kaga, Kazuhiko Nakayama, Keiko Izumi | 2011-08-16 |
| 6693977 | Portable radio device with direct conversion receiver including mixer down-converting incoming signal, and demodulator operating on downconverted signal | Hiroshi Katayama, Katsuaki Abe | 2004-02-17 |
| 6275542 | Direct conversion receiver including mixer down-converting incoming signal, and demodulator operating on downconverted signal | Hiroshi Katayama, Katsuaki Abe | 2001-08-14 |
| 5894499 | Direct conversion receiver having filter with cut-off frequency switching means | Hiroshi Katayama, Masahiro Mimura | 1999-04-13 |
| 5513387 | Automatic gain control circuit | Yutaka Saito | 1996-04-30 |
| 5448774 | Intermittent operation receiver | Katsushi Yokozaki | 1995-09-05 |
| 5387820 | Power supply circuit | — | 1995-02-07 |
| 5361408 | Direct conversion receiver especially suitable for frequency shift keying (FSK) modulated signals | Kazunori Watanabe, Makoto Hasegawa, Kazuaki Takahashi | 1994-11-01 |
| 5293408 | FSK data receiving system | Kazuaki Takahashi, Makoto Hasegawa, Katsushi Yokozaki, Hiroyuki Harada, Masahiro Mimura +1 more | 1994-03-08 |
| 5179727 | Automatic adjusting circuit for an analog filter | — | 1993-01-12 |