H04L 5/04
The signals being represented by different amplitudes or polarities
Official title: the signals being represented by different amplitudes or polarities, e.g. quadriplex
H04L5/04 (The signals being represented by different amplitudes or polarities) appears on 185 US grants and 166 published applications in this corpus.
Search patents in H04L- Granted patents
- 185
- Published applications
- 166
- Assignees
- 113
- Inventors
- 373
- Latest grant
- 11 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 1 | 0 |
| 1978 | 2 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 4 | 0 |
| 1984 | 0 | 0 |
| 1985 | 3 | 0 |
| 1986 | 2 | 0 |
| 1987 | 0 | 0 |
| 1988 | 2 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 3 | 0 |
| 2000 | 1 | 0 |
| 2001 | 8 | 1 |
| 2002 | 3 | 3 |
| 2003 | 3 | 2 |
| 2004 | 1 | 2 |
| 2005 | 1 | 1 |
| 2006 | 2 | 1 |
| 2007 | 0 | 5 |
| 2008 | 2 | 6 |
| 2009 | 0 | 3 |
| 2010 | 4 | 8 |
| 2011 | 6 | 4 |
| 2012 | 4 | 9 |
| 2013 | 10 | 7 |
| 2014 | 7 | 6 |
| 2015 | 14 | 17 |
| 2016 | 10 | 16 |
| 2017 | 13 | 9 |
| 2018 | 10 | 10 |
| 2019 | 7 | 6 |
| 2020 | 11 | 13 |
| 2021 | 11 | 10 |
| 2022 | 9 | 5 |
| 2023 | 7 | 7 |
| 2024 | 4 | 6 |
| 2025 | 7 | 5 |
| 2026 | 5 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Orbital angular momentum-based communication method and apparatus and device11 Aug 2026US 12,706,788 B2Beijing Xiaomi Mobile Software Co., Ltd.
- Systems/methods of dual polarization transmission in cellular communications28 Jul 2026US 12,696,058 B2
- Systems/methods of using dual polarization antennas in cellular communications14 Jul 2026US 12,684,319 B2
- Systems/methods of 5G advancements using a plurality of polarizations17 Feb 2026US 12,556,895 B2
- Orbital angular momentum (OAM) antenna for generating OAM beams3 Feb 2026US 12,542,374 B2QUALCOMM Incorporated
- Systems/methods of dual polarization transmission in cellular communications23 Jul 2026US 2026/0214422 A1ENK Wireless, Inc.
- Systems/methods of using dual polarization antennas in cellular communications9 Jul 2026US 2026/0197613 A1ENK Wireless, Inc.
- Mirror image systems and/or methods7 May 2026US 2026/0129413 A1ENK Wireless, Inc.
- Method of detecting otfs scma signals and receiver implementing the method23 Apr 2026US 2026/0113231 A1Continental Automotive Technologies GmbH
- Systems/methods of autonomous vehicular maneuvering18 Dec 2025US 2025/0386172 A1ENK Wireless, Inc.
Most cited
By later US patents
- Methods and apparatus for combining and/or transmitting multiple symbol streams116US 7,706,456 B2QUALCOMM Incorporated · 2010
- System and method for increased bandwidth efficiency within microwave backhaul of a telecommunication system94US 8,432,884 B1Metropcs Wireless, Inc. · 2013
- High speed digital to analog to digital communication system84US 5,115,450 AAdvanced Micro Devices, Inc. · 1992
- Transparent embedment of data in a video signal83US 6,211,919 B1Tektronix, Inc. · 2001
- System and method for increased bandwidth efficiency within microwave backhaul of a telecommunication system77US 8,811,366 B2Metropcs Wireless, Inc. · 2014