Issued Patents All Time
Showing 1–17 of 17 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8018297 | Balanced-unbalanced conversion circuit | — | 2011-09-13 |
| 7400197 | Gain control circuit capable of reducing change in gain due to variation of ambient temperature | Shoichi Asano | 2008-07-15 |
| 6965759 | Frequency synthesizer capable of obtaining signals in three frequency bands | — | 2005-11-15 |
| 6608502 | Compact transmitter detection circuit with a wide dynamic range | Jiro Kikuchi | 2003-08-19 |
| 6359518 | Signal level adjusting circuit using coupling stage for preventing variation from resulting in each operating point of first amplifying stage and second amplifying stage | — | 2002-03-19 |
| 6236848 | Receiver integrated circuit for mobile telephone | Sadao Igarashi | 2001-05-22 |
| 6177837 | Active low-pass filter | Shoichi Asano | 2001-01-23 |
| 6114921 | Double-balanced modulator and quadri-phase shift keying device | — | 2000-09-05 |
| 5926749 | Amplifier circuit having common AGC to IF and RF amplifiers for use in a transmitter | Sadao Igarashi, Satoshi Urabe | 1999-07-20 |
| 5900781 | Multistage variable gain amplifier circuit | Sadao Igarashi, Satoshi Urabe | 1999-05-04 |
| 5900782 | AGC voltage correction circuit | Sadao Igarashi, Satoshi Urabe | 1999-05-04 |
| 5471654 | Transmitting/receiving unit having automatic gain control system with temperature compensation | Mitsunari Okazaki | 1995-11-28 |
| 5327097 | Gain control circuit | Sadao Igarashi | 1994-07-05 |
| 4596044 | UHF-VHF combination tuner | Masahiko Saito | 1986-06-17 |
| 4581768 | VHF tuner | Masahiko Saito | 1986-04-08 |
| 4369414 | High-frequency input circuit for two inputs | Sadao Igarashi | 1983-01-18 |
| 4359701 | Construction of tuning circuit in tuner | — | 1982-11-16 |