H04L 27/18
Phase-modulated carrier systems, i.e. using phase-shift keying
Official title: Phase-modulated carrier systems, i.e. using phase-shift keying (H04L27/32 takes precedence)
H04L27/18 (Phase-modulated carrier systems, i.e. using phase-shift keying) appears on 6,170 US grants and 4,514 published applications in this corpus.
Search patents in H04L- Granted patents
- 6,170
- Published applications
- 4,514
- Assignees
- 1,402
- Inventors
- 8,407
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 41 | 0 |
| 1977 | 34 | 0 |
| 1978 | 34 | 0 |
| 1979 | 18 | 0 |
| 1980 | 33 | 0 |
| 1981 | 20 | 0 |
| 1982 | 35 | 0 |
| 1983 | 21 | 0 |
| 1984 | 33 | 0 |
| 1985 | 44 | 0 |
| 1986 | 50 | 0 |
| 1987 | 59 | 0 |
| 1988 | 32 | 0 |
| 1989 | 69 | 0 |
| 1990 | 53 | 0 |
| 1991 | 59 | 0 |
| 1992 | 69 | 0 |
| 1993 | 64 | 0 |
| 1994 | 69 | 0 |
| 1995 | 81 | 0 |
| 1996 | 120 | 0 |
| 1997 | 108 | 0 |
| 1998 | 162 | 0 |
| 1999 | 135 | 0 |
| 2000 | 132 | 0 |
| 2001 | 113 | 42 |
| 2002 | 133 | 144 |
| 2003 | 113 | 124 |
| 2004 | 138 | 181 |
| 2005 | 93 | 157 |
| 2006 | 156 | 171 |
| 2007 | 125 | 192 |
| 2008 | 161 | 161 |
| 2009 | 156 | 153 |
| 2010 | 156 | 177 |
| 2011 | 156 | 159 |
| 2012 | 195 | 197 |
| 2013 | 222 | 207 |
| 2014 | 260 | 213 |
| 2015 | 306 | 241 |
| 2016 | 230 | 251 |
| 2017 | 253 | 262 |
| 2018 | 261 | 240 |
| 2019 | 291 | 236 |
| 2020 | 239 | 232 |
| 2021 | 200 | 185 |
| 2022 | 166 | 152 |
| 2023 | 137 | 133 |
| 2024 | 167 | 124 |
| 2025 | 119 | 115 |
| 2026 | 49 | 65 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Transmission method, reception method, transmitter, and receiver29 Sep 2026US 12,750,159 B2Panasonic Intellectual Property Corporation of America
- Signal processing method and apparatus22 Sep 2026US 12,744,696 B2Huawei Technologies Co., Ltd.
- Transmission device and transmission method8 Sep 2026US 12,732,238 B2Panasonic Intellectual Property Corporation of America
- Multi-layer transmission and reception method in 1-bit quantization system, and apparatus therefor8 Sep 2026US 12,732,404 B2LG Electronics Inc.
- Transmission and reception without precise timing capability1 Sep 2026US 12,726,390 B2Samsung Electronics Co., Ltd.
- Method and device for carrying out multi-layer transmission in wireless lan system8 Oct 2026US 2026/0312637 A1LG Electronics Inc.
- Transmitter and method for transmitting data block in wireless communication system8 Oct 2026US 2026/0312754 A1Electronics and Telecommunications Research Institute
- Simplified log-likelihood ratio demapper1 Oct 2026US 2026/0303422 A1Silicon Laboratories Inc.
- Channel estimation reference signal on quadrature amplitude modulation sub-constellation24 Sep 2026US 2026/0291800 A1QUALCOMM Incorporated
- Communication Method and Apparatus24 Sep 2026US 2026/0292662 A1Huawei Technologies Co., Ltd.
Most cited
By later US patents
- Method and apparatus for multiple access between transceivers in wireless communications using OFDM spread spectrum691US 5,282,222 A1994
- 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
- Interactive television and data transmission system366US 4,750,036 ARadio Telcom & Technology, Inc. · 1988
- Code division multiple access (CDMA) communication system333US 6,157,619 AInterDigital Technology Corporation · 2000