Class H03G : CONTROL OF AMPLIFICATION
Subclass 3/22: Gain control in amplifiers or frequency changers (gated amplifiers H03F 3/72; peculiar to television receivers H04N) Automatic control (combined with volume compression or expansion H03G 7/00) in amplifiers having discharge tubes
| Patent # | Title | Filing Date | Issue Date | Patent Owner |
|---|---|---|---|---|
| 10763810 | Variable gain amplifiers for communication systems | Mar 05, 20 | Sep 01, 20 | Inphi Corporation |
| 10622955 | Variable gain amplifiers for communication systems | Mar 06, 19 | Apr 14, 20 | Inphi Corporation |
| 10270409 | Variable gain amplifiers for communication systems | May 16, 17 | Apr 23, 19 | Inphi Corporation |
| 10224889 | Audio output circuit and audio device | Feb 20, 17 | Mar 05, 19 | Shenzhen China Star Optoelectronics Technology Co. Ltd. |
| 9544043 | Electronic circuit arrangement for receiving low frequency electro-magnetic waves with an adjustable attenuator element | Sep 08, 15 | Jan 10, 17 | MAXIM INTEGRATED PRODUCTS GMBH |
| 9130528 | Electronic circuit arrangement for receiving low frequency electromagnetic waves with an adjustable attenuator element | Jul 28, 14 | Sep 08, 15 | MAXIM INTEGRATED PRODUCTS, INC. |
| 8964998 | System for dynamic spectral correction of audio signals to compensate for ambient noise in the listener's environment | Jun 07, 12 | Feb 24, 15 | Sound Enhancement Technology, LLC |
| Publication # | Title | Filing Date | Pub Date | Patent Owner |
|---|---|---|---|---|
| 2020/0204,131 | VARIABLE GAIN AMPLIFIERS FOR COMMUNICATION SYSTEMS | Mar 05, 20 | Jun 25, 20 | Not available |
| 2019/0207,576 | VARIABLE GAIN AMPLIFIERS FOR COMMUNICATION SYSTEMS | Mar 06, 19 | Jul 04, 19 | Not available |
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