H04B 7/2621
Using frequency division multiple access [fdma]
Official title: {using frequency division multiple access [FDMA] (H04B7/2615 takes precedence)}
H04B7/2621 (Using frequency division multiple access [fdma]) appears on 314 US grants and 226 published applications in this corpus.
Search patents in H04B- Granted patents
- 314
- Published applications
- 226
- Assignees
- 123
- Inventors
- 572
- Latest grant
- 9 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 2 | 0 |
| 1979 | 4 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 4 | 0 |
| 1984 | 2 | 0 |
| 1985 | 3 | 0 |
| 1986 | 2 | 0 |
| 1987 | 2 | 0 |
| 1988 | 5 | 0 |
| 1989 | 2 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 3 | 0 |
| 1993 | 2 | 0 |
| 1994 | 7 | 0 |
| 1995 | 4 | 0 |
| 1996 | 6 | 0 |
| 1997 | 3 | 0 |
| 1998 | 5 | 0 |
| 1999 | 14 | 0 |
| 2000 | 18 | 0 |
| 2001 | 5 | 1 |
| 2002 | 8 | 8 |
| 2003 | 5 | 2 |
| 2004 | 6 | 4 |
| 2005 | 5 | 7 |
| 2006 | 2 | 6 |
| 2007 | 3 | 11 |
| 2008 | 6 | 14 |
| 2009 | 5 | 9 |
| 2010 | 4 | 6 |
| 2011 | 9 | 8 |
| 2012 | 12 | 7 |
| 2013 | 10 | 5 |
| 2014 | 10 | 19 |
| 2015 | 15 | 35 |
| 2016 | 13 | 13 |
| 2017 | 25 | 17 |
| 2018 | 15 | 13 |
| 2019 | 20 | 16 |
| 2020 | 13 | 6 |
| 2021 | 12 | 9 |
| 2022 | 4 | 3 |
| 2023 | 4 | 4 |
| 2024 | 6 | 2 |
| 2025 | 3 | 1 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Methods and system for providing high-speed communication on high-speed railway9 Jun 2026US 12,649,503 B2Obshhestvo S Ogranichennoj Otvetsvennostyu “Dok”
- Front end architecture for selectively adding external carrier aggregation band4 Nov 2025US 12,463,668 B2Skyworks Solutions, Inc.
- Rear-facing perception system for vehicles29 Jul 2025US 12,374,120 B2Tusimple, Inc.
- Method and apparatus for providing and utilizing a non-contention based channel in a wireless communication system20 May 2025US 12,309,790 B2InterDigital Technology Corporation
- Adaptive waveform selection in wireless communications30 Jul 2024US 12,052,725 B2QUALCOMM Incorporated
- Method and apparatus for providing and utilizing a non-contention based channel in a wireless communication system7 Aug 2025US 2025/0254692 A1InterDigital Technology Corporation
- Front end architecture for selectively adding external carrier aggregation band29 Aug 2024US 2024/0291507 A1Skyworks Solutions, Inc.
- Method and apparatus for providing and utilizing a non-contention based channel in a wireless communication system28 Mar 2024US 2024/0107542 A1InterDigital Technology Corporation
- Rear-facing perception system for vehicles16 Nov 2023US 2023/0368539 A1Tusimple, Inc.
- Methods and system for providing high-speed communication on high-speed railway9 Nov 2023US 2023/0356761 A1Obshhestvo S Ogranichennoj Otvetsvennostyu “Dok”
Most cited
By later US patents
- Interactive television and data transmission system366US 4,750,036 ARadio Telcom & Technology, Inc. · 1988
- Interactive television and data transmission system314US 5,177,604 ARadio Telcom & Technology, Inc. · 1993
- High density cellular mobile radio communications231US 4,475,010 AAT&T Bell Laboratories · 1984
- Mobile communication system and method employing frequency reuse within a geographical service area214US 4,144,496 AHarris Corporation · 1979
- Frequency hopping spread spectrum data communications system196US 5,287,384 ALXE Inc. · 1994