H04L 27/22
Demodulator circuits
Official title: Demodulator circuits; Receiver circuits
H04L27/22 (Demodulator circuits) appears on 3,128 US grants and 1,830 published applications in this corpus.
Search patents in H04L- Granted patents
- 3,128
- Published applications
- 1,830
- Assignees
- 884
- Inventors
- 4,571
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 33 | 0 |
| 1977 | 24 | 0 |
| 1978 | 27 | 0 |
| 1979 | 13 | 0 |
| 1980 | 24 | 0 |
| 1981 | 15 | 0 |
| 1982 | 32 | 0 |
| 1983 | 19 | 0 |
| 1984 | 26 | 0 |
| 1985 | 29 | 0 |
| 1986 | 37 | 0 |
| 1987 | 48 | 0 |
| 1988 | 19 | 0 |
| 1989 | 58 | 0 |
| 1990 | 37 | 0 |
| 1991 | 33 | 0 |
| 1992 | 50 | 0 |
| 1993 | 43 | 0 |
| 1994 | 44 | 0 |
| 1995 | 50 | 0 |
| 1996 | 81 | 0 |
| 1997 | 74 | 0 |
| 1998 | 103 | 0 |
| 1999 | 85 | 0 |
| 2000 | 84 | 0 |
| 2001 | 70 | 27 |
| 2002 | 77 | 84 |
| 2003 | 70 | 60 |
| 2004 | 89 | 82 |
| 2005 | 59 | 80 |
| 2006 | 80 | 79 |
| 2007 | 61 | 86 |
| 2008 | 56 | 65 |
| 2009 | 83 | 63 |
| 2010 | 78 | 78 |
| 2011 | 78 | 89 |
| 2012 | 87 | 91 |
| 2013 | 111 | 82 |
| 2014 | 130 | 95 |
| 2015 | 130 | 108 |
| 2016 | 104 | 96 |
| 2017 | 115 | 112 |
| 2018 | 124 | 98 |
| 2019 | 105 | 78 |
| 2020 | 88 | 69 |
| 2021 | 60 | 59 |
| 2022 | 50 | 46 |
| 2023 | 46 | 38 |
| 2024 | 47 | 26 |
| 2025 | 29 | 26 |
| 2026 | 13 | 13 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Multi-layer transmission and reception method in 1-bit quantization system, and apparatus therefor8 Sep 2026US 12,732,404 B2LG Electronics Inc.
- Transmit signal squelch at symbol boundaries28 Jul 2026US 12,695,652 B2Analog Devices International Unlimited Company
- Timing detection method, communication system and receiving apparatus21 Jul 2026US 12,689,407 B2NTT, Inc.
- Demodulation14 Jul 2026US 12,683,842 B2Nordic Semiconductor ASA
- Multi-gigabit per second frequency-shift keying (FSK) transceiver28 Apr 2026US 12,615,174 B2The Regents of the University of California
- Simplified log-likelihood ratio demapper1 Oct 2026US 2026/0303422 A1Silicon Laboratories Inc.
- Transmission method, transmission device, reception method, and reception device11 Jun 2026US 2026/0163775 A1Sun Patent Trust
- Phase-based demodulation in wireless power transfer systems14 May 2026US 2026/0135412 A1STMicroelectronics International N. V.
- Communication method and apparatus7 May 2026US 2026/0129433 A1Huawei Technologies Co., Ltd.
- Method and Device for Converting an Analog Input Signal into a Digital Output Signal12 Mar 2026US 2026/0074725 A1Siemens Aktiengesellschaft
Most cited
By later US patents
- Apparatus for providing communication services and methods thereof469US 9,520,945 B2AT&T Intellectual Property I, L. P. · 2016
- Method and apparatus for generating and collecting viewing statistics for remote terminals in a cable television system432US 5,251,324 AScientific-Atlanta, Inc. · 1993
- Code division multiple access (CDMA) communication system333US 6,157,619 AInterDigital Technology Corporation · 2000
- System for data channel level control272US 5,155,590 AScientific-Atlanta, Inc. · 1992
- Automatic frequency selection in a bi-directional cable television system258US 5,225,902 AScientific-Atlanta, Inc. · 1993