H04K3/82 - CPC Classification Index

ClassID:

224684 ⎘

H04K3/82 - CPC Classification

Classification description:

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

Sub-classes:

H04K3/822 » {by detecting the presence of a surveillance, interception or detection} 100
H04K3/825 » {by jamming} 223
H04K3/827 » {using characteristics of target signal or of transmission , e.g. using direct sequence spread spectrum or fast frequency hopping } 45

Recent Application in this class:

20220293078

2022-09-15

Acoustic metamaterial

20220149978

2022-05-12

Path profile analysis

20220034997

2022-02-03

Jamming signal generating apparatus and method thereof

20210050032

2021-02-18

Method for preventing intelligible voice recordings

20200312292

2020-10-01

Acoustic metamaterial

20200082518

2020-03-12

Using photonic emission to develop electromagnetic emission models

20190293781

2019-09-26

Coexistence of radio communication and radar probing

20190147902

2019-05-16

Device and method for preventing intelligible voice recordings

20180166062

2018-06-14

Acoustic metamaterial

#10

20180027003

2018-01-25

Using photonic emission to develop electromagnetic emission models

#11

20170092138

2017-03-30

Drone detection systems

#12

20160293155

2016-10-06

System and method for defined area sound masking

#13

20140369160

2014-12-18

Active cloaking with wideband transducers

#14

20120299762

2012-11-29

Radio frequency particles

#15

20110084796

2011-04-14

METHOD AND SYSTEM FOR SECURE RFID COMMUNICATION BETWEEN A NOISY READER AND A COMMUNICATING OBJECT

#16

20100052968

2010-03-04

Interference detection apparatus and method

#17

20100015910

2010-01-21

Counter-intelligence signal enabled communication device

#18

20090163174

2009-06-25

Device and method for detecting and preventing sensitive information leakage from portable terminal

#19

20090041241

2009-02-12

Near field communications system having enhanced security

#20

20060218410

2006-09-28

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

#21

16208628

2020-02-04

Sound-masking device for a roll-up door