ClassID:

224686

H04K3/825 - CPC Classification

Classification description:

Jamming of communication; Counter-measures; Jamming or countermeasure characterized by its function related to preventing surveillance, interception or detection by jamming

Recent Application in this class:
#1
20260142742
2026-05-21

DEVICE FOR DETECTING AND SUPPRESSING UNMANNED AERIAL VEHICLES

#2
20260005787
2026-01-01

PROCESSING INFORMATION RELATED TO ONE OR MORE MONITORED AREAS

#3
20250343620
2025-11-06

Methods for monitoring and managing communicating objects, trusted device, server, and communicating objects

#4
20250286646
2025-09-11

Electronic Apparatus for Jamming and Operation Method Thereof

#5
20250159394
2025-05-15

DIGITAL IMAGING SYSTEM AND METHOD

#6
20250038880
2025-01-30

INTERNAL CARD READER SKIMMER DISRUPTER

#7
20240430032
2024-12-26

ULTRA-WIDE BAND RADIO FREQUENCY SYSTEM

#8
20240380511
2024-11-14

Detachable drone hijacker and/or jammer method, apparatus and system

#9
20240204905
2024-06-20

NR SCHEME FOR MANAGING EAVESDROPPERS OF PASSIVE RADIOS

#10
20240097813
2024-03-21

USPICIOUS AIRCRAFT COUNTERMEASURE DEVICE, SUSPICIOUS AIRCRAFT COUNTERMEASURE METHOD, AND RECORDING MEDIUM

#11
20240039654
2024-02-01

Internal card reader skimmer disrupter

#12
20230353935
2023-11-02

Sound Masking System

#13
20230283399
2023-09-07

System and method for detecting and controlling contraband devices in a correctional facility utilizing portable electronic devices

#14
20230269021
2023-08-24

A CONTROLLER FOR CONTROLLING WIRELESS COMMUNICATION BETWEEN A NODE AND A MASTER DEVICE IN A WIRELESS NETWORK AND A METHOD THEREOF

#15
20230208550
2023-06-29

Ultra-wide band radio frequency system

#16
20230188243
2023-06-15

Portable electromagnetic countermeasure device

#17
20230105120
2023-04-06

A DEVICE, COMPUTER PROGRAM AND METHOD FOR MONITORING AN UAV

#18
20230053475
2023-02-23

Systems and methods for covert communications

#19
20220399950
2022-12-15

Securing downlink control information in cellular communication networks

#20
20220394463
2022-12-08

COMMUNICATION DEVICE AND METHOD FOR SECURE COMMUNICATION

#21
20220329346
2022-10-13

PROCESSING INFORMATION RELATED TO ONE OR MORE MONITORED AREAS

#22
20220325995
2022-10-13

Reconnaissance and communication assembly

#23
20220316847
2022-10-06

Reconnaissance and communication assembly

#24
20220293078
2022-09-15

Acoustic metamaterial

#25
20220276303
2022-09-01

Hardware component and a method for implementing a camouflage of current traces generated by a digital system

#26
20220256334
2022-08-11

Method, transmitter device and receiver device for securing channel training on a power domain non-orthogonal multiple access system

#27
20220077952
2022-03-10

Systems and methods for covert communications

#28
20220067345
2022-03-03

Method and system for identifying, tracking, and collecting data on a person of interest

#29
20220038202
2022-02-03

Ultra-wide band electromagnetic jamming projector

#30
20210409146
2021-12-30

System and method for monitoring wireless communication channel by using cooperative jamming and spoofing

#31
20210359781
2021-11-18

Handheld portable countermeasure device against unmanned systems

#32
20210235177
2021-07-29

Wireless sound-emitting device and system for remotely controlling a sound-emitting device

#33
20210203433
2021-07-01

Automatic repeat-request system for providing absolute safety and authentication in wireless networks

#34
20210091865
2021-03-25

Intrusion detection and radio fingerprint tracking

#35
20210050032
2021-02-18

Method for preventing intelligible voice recordings

#36
20210025679
2021-01-28

Operating light sources to project patterns for disorienting visual detection systems

#37
20210013988
2021-01-14

System and method for detecting and controlling contraband devices in a correctional facility utilizing portable electronic devices

#38
20200374028
2020-11-26

Ultra-wide band electromagnetic jamming projector

#39
20200343992
2020-10-29

Handheld portable countermeasure device against unmanned systems

#40
20200312292
2020-10-01

Acoustic metamaterial

#41
20200177991
2020-06-04

Sound masking system

#42
20200099459
2020-03-26

Cooperative intrusion detection

#43
20200064443
2020-02-27

METHOD OF IDENTIFYING AND NEUTRALIZING LOW-ALTITUDE UNMANNED AERIAL VEHICLE

#44
20200062392
2020-02-27

Low-altitude unmanned aerial vehicle surveillance system

#45
20200053447
2020-02-13

Wireless sound-emitting device and system for remotely controlling a sound-emitting device

#46
20200051541
2020-02-13

Masking open space noise using sound and corresponding visual

#47
20190229834
2019-07-25

DRONE CONTROL

#48
20190181974
2019-06-13

Apparatus and method for physical layer security commuication in wireless communication system

#49
20190181967
2019-06-13

Cooperative intrusion detection

#50
20190180542
2019-06-13

Wireless key closing device for a motor vehicle, motor vehicle, and method for operating the closing device

#51
20190173605
2019-06-06

Dual-grip portable countermeasure device against unmanned systems

#52
20190158212
2019-05-23

Portable countermeasure device against unmanned systems

#53
20190147902
2019-05-16

Device and method for preventing intelligible voice recordings

#54
20190122011
2019-04-25

Method and apparatus for detecting anti-skimming electromagnetic interference

#55
20190120600
2019-04-25

Directed energy delivery systems capable of disrupting air-based predatory threats

#56
20190103940
2019-04-04

SECURING BLUETOOTH COMMUNICATIONS USING MULTIPLE ANTENNAS

#57
20190073991
2019-03-07

NETWORKED SOUND MASKING SYSTEM

#58
20190069332
2019-02-28

Packet detection in point-to-point wireless communication networks

#59
20190020439
2019-01-17

Device privacy protection

#60
20180374319
2018-12-27

A DEVICE FOR DETECTION THE FOREIGN OBJECTS PLACED, JAMMING THE DATA WITH DISRUPTIVE SIGNALS, ISSUING WARNING NOTICES AND RECORDING THE EVENTS IN ORDER TO PROTECT THE DATA ON THE CARDS USED IN THE PAYMENT STATIONS

#61
20180367237
2018-12-20

Dual-grip portable countermeasure device against unmanned systems

#62
20180331764
2018-11-15

Down conversion system and method

#63
20180268836
2018-09-20

Speech privacy system and/or associated method

#64
20180268835
2018-09-20

Speech privacy system and/or associated method

#65
20180268834
2018-09-20

Speech privacy system and/or associated method

#66
20180254848
2018-09-06

Portable countermeasure device against unmanned systems

#67
20180208326
2018-07-26

Drone defense system

#68
20180175966
2018-06-21

Electronic device and method for operating the same

#69
20180167369
2018-06-14

Establishing a secure uplink channel by transmitting a secret word over a secure downlink channel

#70
20180166062
2018-06-14

Acoustic metamaterial

#71
20180144735
2018-05-24

Masking open space noise using sound and corresponding visual

#72
20180122353
2018-05-03

Sound masking in open-plan spaces using natural sounds

#73
20180091252
2018-03-29

SYSTEMS AND METHODS FOR VEHICLE TRACKING

#74
20180069650
2018-03-08

Systems and methods for control of drones

#75
20180062786
2018-03-01

System and Method for Detecting and Controlling Contraband Devices in a Correctional Facility Utilizing Portable Electronic Devices

#76
20180062785
2018-03-01

System and Method for Detecting and Controlling Contraband Devices in a Correctional Facility Utilizing Portable Electronic Devices

#77
20180062784
2018-03-01

System and method for detecting and controlling contraband devices in a correctional facility utilizing portable electronic devices

#78
20180041831
2018-02-08

Sound masking system

#79
20180013515
2018-01-11

Signal sending method and device

#80
20170272182
2017-09-21

Intrusion detection and radio fingerprint tracking

#81
20170250778
2017-08-31

Dual-grip portable countermeasure device against unmanned systems

#82
20170237520
2017-08-17

Portable countermeasure device against unmanned systems

#83
20170195916
2017-07-06

Packet detection in point-to-point wireless communication networks

#84
20170160379
2017-06-08

Encapsulated electronic warfare architecture

#85
20170134116
2017-05-11

Electromagnetic spectrum management system

#86
20170026146
2017-01-26

Physical layer encryption using out-phased array linearized signaling

#87
20160379621
2016-12-29

Using external sounds to alert vehicle occupants of external events and mask in-car conversations

#88
20160373923
2016-12-22

Method and system for producing a jammer signal

#89
20160351181
2016-12-01

Masking open space noise using sound and corresponding visual

#90
20160344509
2016-11-24

Systems and methods for vehicle tracking

#91
20160226620
2016-08-04

System and method for communication

#92
20160191197
2016-06-30

Automated banking machine that outputs interference signals to jam reading ability of unauthorized card reader devices

#93
20160189701
2016-06-30

Networked sound masking system

#94
20160162696
2016-06-09

Camouflaged communication device

#95
20160150361
2016-05-26

Adaptive location perturbation

#96
20150381307
2015-12-31

Provision of a secured replica pseudo random noise signal

#97
20150350780
2015-12-03

Sound masking system

#98
20150341139
2015-11-26

Unauthorized electro-optics (EO) device detection and response system

#99
20150304839
2015-10-22

Method for transmitting and receiving fake communication data and terminal performing the same

#100
20150287421
2015-10-08

Noise level measurement with mobile devices, location services, and environmental response

#101
20150281829
2015-10-01

Collaboratively processing audio between headset and source to mask distracting noise

#102
20150243297
2015-08-27

Speech intelligibility measurement and open space noise masking

#103
20150194144
2015-07-09

Directional sound masking

#104
20150188662
2015-07-02

PHY-level wireless security

#105
20150181332
2015-06-25

Masking open space noise using sound and corresponding visual

#106
20150137998
2015-05-21

Using external sounds to alert vehicle occupants of external events and mask in-car conversations

#107
20150057999
2015-02-26

Preserving privacy of a conversation from surrounding environment using a counter signal

#108
20140334634
2014-11-13

Hunting noise masking systems and methods

#109
20140309991
2014-10-16

Methods and apparatus for masking speech in a private environment

#110
20140257802
2014-09-11

Signal processing device, signal processing method, and storage medium

#111
20140231679
2014-08-21

Method and technique to control laser effects through tuning of parameters such as repetition rate

#112
20140165144
2014-06-12

Secured communication

#113
20140161273
2014-06-12

Smartphone security masking enclosure

#114
20140158768
2014-06-12

Automated banking machine that outputs interference signals to jam reading ability of unauthorized card reader devices

#115
20140114623
2014-04-24

System and method for controlling and monitoring a sound masking system from an electronic floorplan

#116
20130336130
2013-12-19

System and Method for Detecting Jamming in Wireless Networks

#117
20130315413
2013-11-28

Masking sound generating apparatus, storage medium stored with masking sound signal, masking sound reproducing apparatus, and program

#118
20130299586
2013-11-14

Self service terminal, an anti-skimming unit, a card reader device, a bezel, a method of jamming and use of an anti-skimming unit

#119
20130267163
2013-10-10

COMMUNICATIONS SECURITY IN MULTIPLE-ANTENNA WIRELESS NETWORKS

#120
20130237141
2013-09-12

Radio frequency barrier in a wireless communication network

#121
20130178156
2013-07-11

Near field communication (NFC) security apparatus and method

#122
20130163772
2013-06-27

Sound masking device and sound masking method

#123
20130088936
2013-04-11

SONAR TORPEDO COUNTERMEASURE

#124
20130015374
2013-01-17

Countermeasure device for a mobile tracking device

#125
20120322372
2012-12-20

Secure inductively-coupled communications systems

#126
20120316869
2012-12-13

Generating a masking signal on an electronic device

#127
20120299762
2012-11-29

Radio frequency particles

#128
20120267472
2012-10-25

AIR VEHICLE

#129
20120256541
2012-10-11

Method and apparatus for selective blanking of a motor vehicle license plate

#130
20120219160
2012-08-30

Variable noise masking during periods of substantial silence

#131
20120214404
2012-08-23

Multi-mode phy-level wireless security

#132
20120214403
2012-08-23

Time-varying PHY-level wireless security

#133
20120214402
2012-08-23

Phy-level wireless security

#134
20120163417
2012-06-28

Information leakage prevention apparatus and method

#135
20120101658
2012-04-26

High power laser system

#136
20120095768
2012-04-19

Lips blockers, headsets and systems

#137
20120053931
2012-03-01

Speech masking and cancelling and voice obscuration

#138
20120052794
2012-03-01

Systems, devices, and methods for selectively preventing data transfer from a medical device

#139
20120016665
2012-01-19

Sound masking system and masking sound generation method

#140
20110280235
2011-11-17

Wireless perimeter security device and network using same

#141
20110249828
2011-10-13

Protecting secret data entry from infrared and audio eavesdropping

#142
20110223852
2011-09-15

WIRELESS PERIMETER SECURITY DEVICE AND NETWORK USING SAME

#143
20110188666
2011-08-04

METHOD AND SYSTEM FOR PREVENTING OVERHEARING OF PRIVATE CONVERSATIONS IN PUBLIC PLACES

#144
20110182438
2011-07-28

Masker sound generation apparatus and program

#145
20110151795
2011-06-23

Apparatus and method for maintaining communications with a vehicle in the presence of jamming

#146
20110142250
2011-06-16

GRADIENT COIL NOISE MASKING FOR MPI DEVICE

#147
20110123037
2011-05-26

SOUND MASKING SYSTEM AND METHOD USING VIBRATION EXCITER

#148
20110113949
2011-05-19

Modulation device for a mobile tracking device

#149
20110110523
2011-05-12

Wireless perimeter security device and network using same

#150
20110036999
2011-02-17

Countermeasure method for a mobile tracking device

#151
20110036998
2011-02-17

Countermeasure device for a mobile tracking device

#152
20110033051
2011-02-10

Method and apparatus for reducing probability of detection, improving jamming resistance and security for broadband wireless systems

#153
20110019819
2011-01-27

System and method of masking electromagnetic interference (EMI) emissions of a circuit

#154
20110002477
2011-01-06

Masking noise

#155
20100272285
2010-10-28

Masking of pure tones within sound from a noise generating source

#156
20100208912
2010-08-19

Masking sound generating apparatus, masking system, masking sound generating method, and program

#157
20100166180
2010-07-01

CLOAKING OF RADIO SIGNALS

#158
20100104112
2010-04-29

Variable noise masking during periods of substantial silence

#159
20100056040
2010-03-04

Adaptive crosspole technique

#160
20100033305
2010-02-11

Method and system for secure communication

#161
20090326732
2009-12-31

Protecting secret data entry from infrared and audio eavesdropping

#162
20090315991
2009-12-24

Wireless video surveillance jamming and interference prevention

#163
20090306798
2009-12-10

System and method for monitoring/controlling a sound masking system from an electronic floorplan

#164
20090282874
2009-11-19

Washing machine and sound control method thereof

#165
20090275287
2009-11-05

Wireless video surveillance jamming and interface prevention

#166
20090251354
2009-10-08

Method and system for extending operational electronic range of a vehicle

#167
20090250634
2009-10-08

Back illumination method for counter measuring IR guided missiles

#168
20090224035
2009-09-10

Device for protecting contactless communication objects against fraud

#169
20090189785
2009-07-30

Method and apparatus for reporting a missile threat to a commercial aircraft

#170
20090175484
2009-07-09

Embedded audio system in distributed acoustic sources

#171
20090116659
2009-05-07

Networked sound masking system with centralized sound masking generation

#172
20090093211
2009-04-09

Device for preventing eavesdropping through speaker

#173
20090084252
2009-04-02

Method for antimissile protection of vehicles and implementing device

#174
20090074199
2009-03-19

SYSTEM FOR PROVIDING A REDUCTION OF AUDIABLE NOISE PERCEPTION FOR A HUMAN USER

#175
20090066481
2009-03-12

METHOD AND APPARATUS FOR IMPROVING THE EFFICIENCY AND ACCURACY OF RFID SYSTEMS

#176
20090041241
2009-02-12

Near field communications system having enhanced security

#177
20090013205
2009-01-08

Information leakage prevention apparatus and information leakage prevention method

#178
20080317265
2008-12-25

Anti-eavesdropping device

#179
20080258877
2008-10-23

Secure self scan

#180
20080243211
2008-10-02

User selectable masking sounds for medical instruments

#181
20080237346
2008-10-02

System for secure communication between a contactless card reader and a card

#182
20080235008
2008-09-25

Sound masking system and masking sound generation method

#183
20080219179
2008-09-11

Transmission device, transmission method, reception device, and communication system

#184
20080166962
2008-07-10

Method and device for providing active security to a contact-free electronic device

#185
20080136701
2008-06-12

Coordination of electronic counter measures

#186
20080089524
2008-04-17

Audio signal processing system

#187
20080074306
2008-03-27

Jamming device and method

#188
20080072331
2008-03-20

Protecting secret data entry from infrared and audio eavesdropping

#189
20080052767
2008-02-28

Wireless perimeter security device and network using same

#190
20080046992
2008-02-21

Wireless perimeter security device and network using same

#191
20080046972
2008-02-21

Wireless Perimeter Security Device and Network Using Same

#192
20080046566
2008-02-21

Wireless perimeter security device and network using same

#193
20080043695
2008-02-21

Wireless perimeter security device and network using same

#194
20080025511
2008-01-31

Data communication system

#195
20080024294
2008-01-31

Systems, devices, and methods for selectively preventing data transfer from a medical device

#196
20080002836
2008-01-03

System and method for a sound masking system for networked workstations or offices

#197
20070293142
2007-12-20

Secure Contactless Communication Device and Method

#198
20070252687
2007-11-01

METHOD AND APPARATUS FOR IMPROVING THE EFFICIENCY AND ACCURACY OF RFID SYSTEMS

#199
20070252677
2007-11-01

METHOD AND APPARATUS FOR IMPROVING THE EFFICIENCY AND ACCURACY OF RFID SYSTEMS

#200
20070206177
2007-09-06

Fiber laser based directional infrared countermeasure (DIRCM) system

#201
20070203698
2007-08-30

Disruption of speech understanding by adding a privacy sound thereto

#202
20070153714
2007-07-05

Device, system and method of securing wireless communication

#203
20070133816
2007-06-14

Sound masking system

#204
20070132596
2007-06-14

Sound Privacy Machine and Methods of Use Thereof

#205
20070083361
2007-04-12

Method and apparatus for disturbing the radiated voice signal by attenuation and masking

#206
20070080847
2007-04-12

System and method for detecting and jamming emitter signals

#207
20070075145
2007-04-05

Jammer for tags and smart cards

#208
20070016944
2007-01-18

Method and apparatus for creating scramble signals in RFID

#209
20060247924
2006-11-02

Method and system for masking speech

#210
20060247919
2006-11-02

Method and apparatus of overlapping and summing speech for an output that disrupts speech

#211
20060241939
2006-10-26

Method and system for masking speech

#212
20060238414
2006-10-26

Microwave self-phasing antenna arrays for secure data transmission and satellite network crosslinks

#213
20060226969
2006-10-12

Method and apparatus for a privacy enabling radio frequency identification (RFID) reader

#214
20060218410
2006-09-28

Method and system to announce or prevent voyeur recording in a monitored environment

#215
20060176033
2006-08-10

Scrambling of the current signature of an integrated circuit

#216
20060176032
2006-08-10

Secure supply of an integrated circuit

#217
20060113843
2006-06-01

Method and apparatus for delivering secured telephony service in a hybrid coaxial cable network

#218
20060109983
2006-05-25

Signal masking and method thereof

#219
20060009969
2006-01-12

Auto-adjusting sound masking system and method

#220
20060002559
2006-01-05

Method for preventing eavesdropping in wireless communication system

#221
20060001568
2006-01-05

Method and apparatus for providing an electronic warfare target simulator

#222
20050212673
2005-09-29

System and method for selectively reading RFID devices

#223
20050212660
2005-09-29

Method and apparatus for improving the efficiency and accuracy of RFID systems

#224
20050089171
2005-04-28

Wireless perimeter security device and network using same

#225
20050065778
2005-03-24

Secure speech

#226
20050034168
2005-02-10

Method and apparatus for delivering secured telephony service in a hybrid coaxial cable network

#227
20050031141
2005-02-10

Timer ramp-up circuit and method for a sound masking system

#228
20050030226
2005-02-10

Microwave self-phasing antenna arrays for secure data transmission & satellite network crosslinks

#229
19397252
2026-04-28

Securement of optical fibers against eavesdropping using monitoring of signals on a fiber

#230
17356684
2024-07-23

Anti-surveillance system and method for personal devices

#231
17003726
2023-09-12

Systems and methods for preventing lightbeam access to microphones of smart devices

#232
16826353
2022-10-18

Radio frequency deception network

#233
16668888
2020-12-01

Methods and systems for remote identification, messaging, and tolling of aerial vehicles

#234
15640550
2018-01-30

System, method, and apparatus for detecting and jamming wireless devices