H04L 1/04
Using frequency diversity
Official title: using frequency diversity
H04L1/04 (Using frequency diversity) appears on 572 US grants and 616 published applications in this corpus.
Search patents in H04L- Granted patents
- 572
- Published applications
- 616
- Assignees
- 207
- Inventors
- 966
- Latest grant
- 2 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 2 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 2 | 0 |
| 1993 | 0 | 0 |
| 1994 | 6 | 0 |
| 1995 | 2 | 0 |
| 1996 | 0 | 0 |
| 1997 | 2 | 0 |
| 1998 | 2 | 0 |
| 1999 | 4 | 0 |
| 2000 | 0 | 0 |
| 2001 | 9 | 1 |
| 2002 | 4 | 15 |
| 2003 | 5 | 13 |
| 2004 | 6 | 20 |
| 2005 | 10 | 10 |
| 2006 | 13 | 21 |
| 2007 | 10 | 30 |
| 2008 | 17 | 29 |
| 2009 | 16 | 27 |
| 2010 | 24 | 22 |
| 2011 | 18 | 24 |
| 2012 | 31 | 20 |
| 2013 | 29 | 39 |
| 2014 | 30 | 27 |
| 2015 | 43 | 39 |
| 2016 | 29 | 27 |
| 2017 | 32 | 50 |
| 2018 | 29 | 31 |
| 2019 | 40 | 30 |
| 2020 | 30 | 38 |
| 2021 | 34 | 25 |
| 2022 | 16 | 21 |
| 2023 | 18 | 25 |
| 2024 | 21 | 13 |
| 2025 | 24 | 12 |
| 2026 | 5 | 7 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Application-based multi-band transmission2 Jun 2026US 12,647,206 B2T-Mobile USA, Inc.
- Demodulation reference signal based modulation and coding scheme determination in downlink allocation12 May 2026US 12,627,443 B2Dell Products L. P.
- Method and apparatus for signaling suspension and resumption of network coding operation10 Mar 2026US 12,574,141 B2Canon Kabushiki Kaisha
- Robust retransmission topologies using error correction17 Feb 2026US 12,556,303 B2Bose Corporation
- Dynamic repetition and frequency hopping factors for physical uplink control channel6 Jan 2026US 12,520,325 B2QUALCOMM Incorporated
- Parameter based adaption of a transmission scheme on a radio resource24 Sep 2026US 2026/0291544 A1
- Methods and procedures for unequal modulation over spatial streams and frequency segments12 Mar 2026US 2026/0074841 A1InterDigital Patent Holdings, Inc.
- Methods and apparatus for mapping transport blocks5 Mar 2026US 2026/0067031 A1QUALCOMM Incorporated
- Control information-based packet stitching of self-scheduled uplink transmissions5 Feb 2026US 2026/0040302 A1QUALCOMM Incorporated
- Code block bundle interleaving15 Jan 2026US 2026/0019192 A1QUALCOMM Incorporated
Most cited
By later US patents
- Multicarrier sub-layer for direct sequence channel and multiple-access coding463US 7,430,257 B1Lot 41 Acquisition Foundation, LLC · 2008
- Frequency-shifted feedback cavity used as a phased array antenna controller and carrier interference multiple access spread-spectrum transmitter445US 5,955,992 A1999
- Method and apparatus for transmitting and receiving signals having a carrier interferometry architecture344US 6,686,879 B2Genghiscomm Corporation · 2004
- Multiple access method and system268US 7,010,048 B1Aqvity, LLC · 2006
- Data transmission system including an RF transponder for generating a broad spectrum of intelligence bearing sidebands259US 3,967,202 ANorthern Illinois Gas Company · 1976