H04K 3/40
Jamming having variable characteristics
Official title: {Jamming having variable characteristics}
H04K3/40 (Jamming having variable characteristics) appears on 922 US grants and 873 published applications in this corpus.
Search patents in H04K- Granted patents
- 922
- Published applications
- 873
- Assignees
- 461
- Inventors
- 1,801
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 8 | 0 |
| 1977 | 5 | 0 |
| 1978 | 5 | 0 |
| 1979 | 4 | 0 |
| 1980 | 7 | 0 |
| 1981 | 0 | 0 |
| 1982 | 7 | 0 |
| 1983 | 4 | 0 |
| 1984 | 2 | 0 |
| 1985 | 1 | 0 |
| 1986 | 2 | 0 |
| 1987 | 6 | 0 |
| 1988 | 7 | 0 |
| 1989 | 3 | 0 |
| 1990 | 6 | 0 |
| 1991 | 7 | 0 |
| 1992 | 8 | 0 |
| 1993 | 11 | 0 |
| 1994 | 20 | 0 |
| 1995 | 3 | 0 |
| 1996 | 2 | 0 |
| 1997 | 1 | 0 |
| 1998 | 4 | 0 |
| 1999 | 5 | 0 |
| 2000 | 4 | 0 |
| 2001 | 9 | 3 |
| 2002 | 15 | 9 |
| 2003 | 4 | 19 |
| 2004 | 13 | 14 |
| 2005 | 6 | 9 |
| 2006 | 15 | 27 |
| 2007 | 12 | 32 |
| 2008 | 21 | 41 |
| 2009 | 16 | 38 |
| 2010 | 24 | 34 |
| 2011 | 34 | 42 |
| 2012 | 52 | 41 |
| 2013 | 34 | 36 |
| 2014 | 48 | 35 |
| 2015 | 34 | 44 |
| 2016 | 36 | 49 |
| 2017 | 56 | 40 |
| 2018 | 45 | 42 |
| 2019 | 52 | 49 |
| 2020 | 47 | 58 |
| 2021 | 44 | 47 |
| 2022 | 43 | 44 |
| 2023 | 50 | 42 |
| 2024 | 30 | 34 |
| 2025 | 32 | 18 |
| 2026 | 18 | 26 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- H04K 3/45Characterized by including monitoring of the target or target signal507
- H04K 3/42Characterized by the control of the jamming frequency or wavelength413
- H04K 3/43Characterized by the control of the jamming power, signal-to-noise ratio or geographic302
- H04K 3/41Characterized by the control of the jamming activation or deactivation time286
- H04K 3/44Characterized by the control of the jamming waveform or modulation type143
- H04K 3/46Characterized in that the jamming signal is produced by retransmitting a received105
Recent patents
- System, method and computer program product for detection of GNSS jammers8 Sep 2026US 12,732,302 B2Israel Aerospace Industries Ltd.
- Intelligent, adaptive, electronic countermeasure generation system1 Sep 2026US 12,724,141 B1The United States of America as represented by the Secretary of the Navy
- Portable countermeasure system25 Aug 2026US 12,720,513 B2Steelrock Technologies Limited
- System and method for blocking of low power wide area networks7 Jul 2026US 12,676,693 B1SR Technologies, Inc.
- Interference signal sending method and apparatus, electronic device, and computer-readable storage medium7 Jul 2026US 12,676,694 B2Zte Corporation
- System, method and computer program product for detection of gnss jammers24 Sep 2026US 2026/0291638 A1Israel Aerospace Industries Ltd.
- Radio frequency jammer utilizing antenna array10 Sep 2026US 2026/0269971 A1Tron Future Tech Inc.
- Systems and methods for signal jamming10 Sep 2026US 2026/0269972 A1L3Harris Global Communications, Inc.
- 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.
Most cited
By later US patents
- Method for collecting data using compact internetworked wireless integrated network sensors (WINS)932US 6,735,630 B1Sensoria Corporation · 2004
- Method and apparatus for internetworked wireless integrated network sensor (WINS) nodes858US 6,859,831 B1Sensoria Corporation · 2005
- Method and apparatus for distributed signal processing among internetworked wireless integrated network sensors (WINS)510US 6,832,251 B1Sensoria Corporation · 2004
- Cognitive radio methodology, physical layer policies and machine learning492US 8,515,473 B2BAE Systems Information and Electronic Systems Integration Inc. · 2013
- Apparatus for internetworked hybrid wireless integrated network sensors (WINS)463US 6,826,607 B1Sensoria Corporation · 2004