H04K 3/20
Countermeasures against jamming
Official title: {Countermeasures against jamming (in radar G01S7/36; interference suppression in receivers H04B1/10)}
H04K3/20 (Countermeasures against jamming) appears on 1,105 US grants and 1,031 published applications in this corpus.
Search patents in H04K- Granted patents
- 1,105
- Published applications
- 1,031
- Assignees
- 485
- Inventors
- 2,170
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 11 | 0 |
| 1977 | 3 | 0 |
| 1978 | 2 | 0 |
| 1979 | 5 | 0 |
| 1980 | 8 | 0 |
| 1981 | 5 | 0 |
| 1982 | 10 | 0 |
| 1983 | 4 | 0 |
| 1984 | 2 | 0 |
| 1985 | 2 | 0 |
| 1986 | 4 | 0 |
| 1987 | 8 | 0 |
| 1988 | 5 | 0 |
| 1989 | 3 | 0 |
| 1990 | 9 | 0 |
| 1991 | 6 | 0 |
| 1992 | 10 | 0 |
| 1993 | 6 | 0 |
| 1994 | 9 | 0 |
| 1995 | 3 | 0 |
| 1996 | 4 | 0 |
| 1997 | 4 | 0 |
| 1998 | 2 | 0 |
| 1999 | 11 | 0 |
| 2000 | 10 | 0 |
| 2001 | 18 | 3 |
| 2002 | 17 | 19 |
| 2003 | 15 | 20 |
| 2004 | 13 | 25 |
| 2005 | 13 | 19 |
| 2006 | 28 | 23 |
| 2007 | 19 | 93 |
| 2008 | 35 | 56 |
| 2009 | 32 | 42 |
| 2010 | 31 | 43 |
| 2011 | 37 | 30 |
| 2012 | 50 | 33 |
| 2013 | 50 | 39 |
| 2014 | 47 | 49 |
| 2015 | 43 | 50 |
| 2016 | 44 | 62 |
| 2017 | 69 | 50 |
| 2018 | 45 | 44 |
| 2019 | 68 | 37 |
| 2020 | 47 | 46 |
| 2021 | 45 | 48 |
| 2022 | 35 | 52 |
| 2023 | 49 | 41 |
| 2024 | 44 | 51 |
| 2025 | 35 | 33 |
| 2026 | 30 | 23 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Radio jamming detection6 Oct 2026US 12,756,493 B2Telit Cinterion Deutschland GmbH
- Measuring a resistance against an adversarial attack and estimating a parameter of an interference source29 Sep 2026US 12,750,153 B2Rohde & Schwarz GmbH & Co.KG
- Adaptive jammer detection29 Sep 2026US 12,750,154 B2QUALCOMM Incorporated
- Method for eliminating jamming by OAM mode quadratic coordination22 Sep 2026US 12,744,617 B2Xidian University
- Identification and mitigation of attacks and/or malfunction of autonomous vehicles sensor involving disappearing object15 Sep 2026US 12,739,051 B2Kyndryl, Inc.
- Transmitter, receiver, communication system and communication method for mimo communication enabling mitigation of an interfering transmitter1 Oct 2026US 2026/0303137 A1ETH Zurich
- Low-pass to notch reconfigurable filter24 Sep 2026US 2026/0291454 A1QUALCOMM Incorporated
- System, method and computer program product for detection of gnss jammers24 Sep 2026US 2026/0291638 A1Israel Aerospace Industries Ltd.
- Systems and methods for signal jamming10 Sep 2026US 2026/0269972 A1L3Harris Global Communications, Inc.
- Systems and methods for interstellar distributed life redundancy and species 2.0 state synchronization system with ground-to-space identity anchoring, spaceborne multi-agent verification, and civilization-seed autonomous continuit3 Sep 2026US 2026/0259775 A1
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