H04K 3/42
Characterized by the control of the jamming frequency or wavelength
Official title: {characterized by the control of the jamming frequency or wavelength}
H04K3/42 (Characterized by the control of the jamming frequency or wavelength) appears on 413 US grants and 351 published applications in this corpus.
Search patents in H04K- Granted patents
- 413
- Published applications
- 351
- Assignees
- 239
- Inventors
- 810
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 7 | 0 |
| 1977 | 4 | 0 |
| 1978 | 3 | 0 |
| 1979 | 3 | 0 |
| 1980 | 4 | 0 |
| 1981 | 0 | 0 |
| 1982 | 6 | 0 |
| 1983 | 2 | 0 |
| 1984 | 2 | 0 |
| 1985 | 1 | 0 |
| 1986 | 2 | 0 |
| 1987 | 3 | 0 |
| 1988 | 5 | 0 |
| 1989 | 2 | 0 |
| 1990 | 4 | 0 |
| 1991 | 7 | 0 |
| 1992 | 7 | 0 |
| 1993 | 9 | 0 |
| 1994 | 15 | 0 |
| 1995 | 3 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 2 | 0 |
| 1999 | 3 | 0 |
| 2000 | 3 | 0 |
| 2001 | 4 | 1 |
| 2002 | 7 | 4 |
| 2003 | 1 | 10 |
| 2004 | 6 | 7 |
| 2005 | 1 | 3 |
| 2006 | 7 | 13 |
| 2007 | 3 | 10 |
| 2008 | 8 | 14 |
| 2009 | 7 | 15 |
| 2010 | 8 | 20 |
| 2011 | 15 | 19 |
| 2012 | 26 | 16 |
| 2013 | 15 | 14 |
| 2014 | 19 | 15 |
| 2015 | 13 | 22 |
| 2016 | 16 | 19 |
| 2017 | 22 | 20 |
| 2018 | 22 | 17 |
| 2019 | 16 | 14 |
| 2020 | 21 | 14 |
| 2021 | 13 | 16 |
| 2022 | 13 | 19 |
| 2023 | 15 | 18 |
| 2024 | 10 | 13 |
| 2025 | 16 | 8 |
| 2026 | 10 | 10 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Portable countermeasure system25 Aug 2026US 12,720,513 B2Steelrock Technologies Limited
- Interference signal sending method and apparatus, electronic device, and computer-readable storage medium7 Jul 2026US 12,676,694 B2Zte Corporation
- Hearing protection apparatus16 Jun 2026US 12,659,657 B2
- Controller for and method of controlling a counter measure system12 May 2026US 12,624,923 B2Steelrock Technologies Limited
- NR scheme for managing eavesdroppers of passive radios12 May 2026US 12,627,395 B2Nokia Technologies Oy
- Airborne system for countering unmanned aircraft10 Sep 2026US 2026/0269973 A1
- System and method for detection of cellular signal jamming for security systems20 Aug 2026US 2026/0246558 A1Digital Monitoring Products, Inc.
- Waveform generation30 Jul 2026US 2026/0222104 A1BAE SYSTEMS plc
- Interfering in time-division duplex communication18 Jun 2026US 2026/0173208 A1D-Fend Solutions Ad Ltd.
- Secure communications through friend-aware intelligent jamming in contested environments11 Jun 2026US 2026/0163667 A1The Board of Trustees of the University of Illinois
Most cited
By later US patents
- Method and system for intelligent jamming signal generation430US 9,356,727 B2Spectrum Effect Inc. · 2016
- Deterent for unmanned aerial systems234US 9,715,009 B1XiDrone Systems, Inc. · 2017
- Disruption of speech understanding by adding a privacy sound thereto233US 7,363,227 B2Herman Miller, Inc. · 2008
- Airborne radar jamming system227US 8,830,112 B1The Boeing Company · 2014
- Signal transmission surveillance system216US 8,001,901 B2The United States of America as represented by the Secretary of the Navy · 2011