H04L 5/0005
Time-frequency
Official title: {Time-frequency}
H04L5/0005 (Time-frequency) appears on 25,765 US grants and 32,485 published applications in this corpus.
Search patents in H04L- Granted patents
- 25,765
- Published applications
- 32,485
- Assignees
- 1,542
- Inventors
- 13,792
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 2 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 2 | 0 |
| 1994 | 2 | 0 |
| 1995 | 2 | 0 |
| 1996 | 8 | 0 |
| 1997 | 4 | 0 |
| 1998 | 10 | 0 |
| 1999 | 11 | 0 |
| 2000 | 11 | 0 |
| 2001 | 19 | 19 |
| 2002 | 36 | 64 |
| 2003 | 30 | 45 |
| 2004 | 22 | 61 |
| 2005 | 28 | 147 |
| 2006 | 69 | 169 |
| 2007 | 57 | 313 |
| 2008 | 104 | 476 |
| 2009 | 117 | 696 |
| 2010 | 237 | 729 |
| 2011 | 404 | 870 |
| 2012 | 602 | 917 |
| 2013 | 797 | 1136 |
| 2014 | 1049 | 1253 |
| 2015 | 1233 | 1609 |
| 2016 | 1427 | 1710 |
| 2017 | 1586 | 1654 |
| 2018 | 1504 | 2008 |
| 2019 | 1949 | 2570 |
| 2020 | 2224 | 3002 |
| 2021 | 2320 | 2730 |
| 2022 | 2331 | 2636 |
| 2023 | 2235 | 2504 |
| 2024 | 2325 | 2280 |
| 2025 | 1977 | 1764 |
| 2026 | 1026 | 1123 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Wireless secure communication method using reconfigurable intelligent surface-non-orthogonal multiple access under complex channel conditions6 Oct 2026US 12,756,426 B2Taiyuan University of Science and Technology
- Joint SRI and configuration information for UE6 Oct 2026US 12,756,430 B2Nokia Technologies Oy
- Enhanced frequency hopping for data transmissions6 Oct 2026US 12,756,507 B2Intel Corporation
- Reference signal measurement mechanisms during secondary cell activation in new radio6 Oct 2026US 12,756,509 B2Apple Inc.
- Midamble operation in a wireless local area network6 Oct 2026US 12,756,510 B2Avalon Technology Solutions LLC
- Precoder selection for minimizing impact of cyclic shift port virtualization on communication performance in joint communication and sensing8 Oct 2026US 2026/0312668 A1Mediatek Inc.
- Enhanced Long Range Communication Schemes In Wireless Communications8 Oct 2026US 2026/0312715 A1Mediatek Inc.
- Methods of applying cyclic-shift-coded mimo ofdm system to simultaneously perform beam management and improve sensing capability in integrated communication and sensing8 Oct 2026US 2026/0312727 A1Mediatek Inc.
- Method and apparatus for reference signal determination for radio link quality evaluation in wireless communications8 Oct 2026US 2026/0312740 A1Apogee 5G Global, LLC
- Synchronization across multiple sensor systems8 Oct 2026US 2026/0312741 A1
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
- Synchronous coherent orthogonal frequency division multiplexing system, method, software and device653US 5,867,478 AMotorola, Inc. · 1999
- Spatio-temporal processing for communication580US 6,144,711 ACisco Systems, Inc. · 2000
- Method for frequency division duplex communications526US 5,933,421 AAT&T Wireless Services, Inc. · 1999
- Orthogonal frequency division multiplexing system with dynamically scalable operating parameters and method thereof438US 6,175,550 B1Lucent Technologies Inc. · 2001