H04K 3/822
By detecting the presence of a surveillance, interception or detection
Official title: {by detecting the presence of a surveillance, interception or detection}
H04K3/822 (By detecting the presence of a surveillance, interception or detection) appears on 177 US grants and 181 published applications in this corpus.
Search patents in H04K- Granted patents
- 177
- Published applications
- 181
- Assignees
- 104
- Inventors
- 390
- Latest grant
- 4 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 2 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 0 |
| 2002 | 1 | 0 |
| 2003 | 0 | 4 |
| 2004 | 1 | 4 |
| 2005 | 2 | 7 |
| 2006 | 6 | 8 |
| 2007 | 2 | 5 |
| 2008 | 5 | 1 |
| 2009 | 5 | 4 |
| 2010 | 5 | 9 |
| 2011 | 9 | 3 |
| 2012 | 7 | 4 |
| 2013 | 6 | 11 |
| 2014 | 7 | 10 |
| 2015 | 12 | 12 |
| 2016 | 11 | 12 |
| 2017 | 10 | 12 |
| 2018 | 11 | 17 |
| 2019 | 17 | 10 |
| 2020 | 6 | 14 |
| 2021 | 10 | 5 |
| 2022 | 8 | 13 |
| 2023 | 12 | 5 |
| 2024 | 6 | 8 |
| 2025 | 5 | 1 |
| 2026 | 1 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Method for reducing interference between radar and uplink frequency band and communication apparatus4 Aug 2026US 12,701,599 B2Huawei Technologies Co., Ltd.
- System and method for scheduling distributed wireless communication based on radar sensing information16 Dec 2025US 12,501,465 B2Imec Vzw
- Processing information related to one or more monitored areas10 Jun 2025US 12,328,185 B2D-Fend Solutions Ad Ltd.
- Methods and apparatus for operating antennas in the presence of airborne radar signals4 Mar 2025US 12,241,995 B2QUALCOMM Incorporated
- Channel selection for dynamic-frequency-selection channels using puncturing4 Mar 2025US 12,244,412 B2Cisco Technology, Inc.
- Wireless sensing protection11 Jun 2026US 2026/0160855 A1QUALCOMM Incorporated
- Processing information related to one or more monitored areas1 Jan 2026US 2026/0005787 A1D-Fend Solutions Ad Ltd.
- User equipment operating method and data communication system operating method for radar and data communication coexistence18 Dec 2025US 2025/0386338 A1Samsung Electronics Co., Ltd.
- Privacy Device For Smart Speakers5 Dec 2024US 2024/0406648 A1
- Waveform detection interface14 Nov 2024US 2024/0380510 A1Telefonaktiebolaget LM Ericsson (publ)
Most cited
By later US patents
- Spectrum surveillance receiver system244US 4,501,020 AHer Majesty in Right of Canada · 1985
- System for specific emitter identification208US 8,326,240 B1Rockwell Collins, Inc. · 2012
- Methods and apparatus for sensing the presence of a transmission signal in a wireless channel205US 8,027,690 B2QUALCOMM Incorporated · 2011
- Methods and tools for assisting in the configuration of a wireless radio network170US 11,751,068 B2Ubiquiti Inc. · 2023
- Radar detection and dynamic frequency selection for wireless local area networks105US 6,697,013 B2Atheros Communications, Inc. · 2004