Assignee
KNOGO CORP
32 granted patents·1,515 citations·filing 1975–1993
Top patents by PatentIndex Score
32 records- 0194US4590461ATamper resistant target wafer and fastener assemblyKNOGO CORP·Filed 1984·Granted May 20, 1986·78 cites·9 claims
- 0292US4074249AMagnetic detection meansKNOGO CORP·Filed 1977·Granted Feb 14, 1978·59 cites·11 claims
- 0391US4135184AElectronic theft detection system for monitoring wide passagewaysKNOGO CORP·Filed 1977·Granted Jan 16, 1979·122 cites·14 claims
- 0491US4016553AArticle detection system with near field electromagnetic wave controlKNOGO CORP·Filed 1975·Granted Apr 5, 1977·75 cites·27 claims
- 0589US4118693AMethod and apparatus for producing uniform electromagnetic fields in an article detection systemKNOGO CORP·Filed 1977·Granted Oct 3, 1978·67 cites·21 claims
- 0688US4870391AMultiple frequency theft detection systemKNOGO CORP·Filed 1988·Granted Sep 26, 1989·84 cites·27 claims
- 0786US4326198AMethod and apparatus for the promotion of selected harmonic response signals in an article detection systemKNOGO CORP·Filed 1976·Granted Apr 20, 1982·50 cites·27 claims
- 0883US5088165ATheft deterrent fastener and fastener assemblyKNOGO CORP·Filed 1990·Granted Feb 18, 1992·57 cites·16 claims
- 0983US4987754AMagnetically releasable target lockKNOGO CORP·Filed 1990·Granted Jan 29, 1991·62 cites·18 claims
- 1083US4568921ATheft detection apparatus and target and method of making sameKNOGO CORP·Filed 1984·Granted Feb 4, 1986·50 cites·29 claims
- 1182US4665387AMethod and apparatus for target deactivation and reactivation in article surveillance systemsKNOGO CORP·Filed 1983·Granted May 12, 1987·46 cites·13 claims
- 1282US4531264ATheft detection system target fastenerKNOGO CORP·Filed 1983·Granted Jul 30, 1985·36 cites·10 claims
- 1382US4384281ATheft detection apparatus using saturable magnetic targetsKNOGO CORP·Filed 1980·Granted May 17, 1983·54 cites·29 claims
- 1482US4274090ADetection of articles in adjacent passagewaysKNOGO CORP·Filed 1980·Granted Jun 16, 1981·45 cites·8 claims
- 1582US4095214AElectronic monitoring system and responder deviceKNOGO CORP·Filed 1976·Granted Jun 13, 1978·66 cites·3 claims
- 1681US4623877AMethod and apparatus for detection of targets in an interrogation zoneKNOGO CORP·Filed 1983·Granted Nov 18, 1986·73 cites·62 claims
- 1780US4751500ADetection of unauthorized removal of theft detection target devicesKNOGO CORP·Filed 1987·Granted Jun 14, 1988·57 cites·32 claims
- 1879US4476459ATheft detection method and apparatus in which the decay of a resonant circuit is detectedKNOGO CORP·Filed 1981·Granted Oct 9, 1984·40 cites·31 claims
- 1976US5126720AMethod and apparatus for deactivating magnetic targetsKNOGO CORP·Filed 1991·Granted Jun 30, 1992·56 cites·11 claims
- 2074US4187509AWafer and fastener for use in electronic theft detection systemKNOGO CORP·Filed 1977·Granted Feb 5, 1980·35 cites·12 claims
- 2171US4684930AMethod and apparatus for deactivating targets used in electromagnetic type article surveillance systemsKNOGO CORP·Filed 1986·Granted Aug 4, 1987·39 cites·16 claims
- 2269US4321586AArticle theft detectionKNOGO CORP·Filed 1980·Granted Mar 23, 1982·28 cites·20 claims
- 2368US5225807AMethod and apparatus for sensitizing and desensitizing targets for electronic article surveillance systemsKNOGO CORP·Filed 1991·Granted Jul 6, 1993·39 cites·20 claims
- 2467US4299040AFastening meansKNOGO CORP·Filed 1975·Granted Nov 10, 1981·18 cites·4 claims
- 2566US5401584ASurveillance marker and method of making sameKNOGO CORP·Filed 1993·Granted Mar 28, 1995·38 cites·7 claims
- 2665US5121103ALoad isolated article surveillance system and antenna assemblyKNOGO CORP·Filed 1988·Granted Jun 9, 1992·35 cites·1 claims
- 2758US5029291AElectromagnetic sensor element and methods and apparatus for making and using sameKNOGO CORP·Filed 1990·Granted Jul 2, 1991·30 cites·41 claims
- 2854US5206626AStabilized article surveillance responderKNOGO CORP·Filed 1991·Granted Apr 27, 1993·30 cites·24 claims
- 2950US5146204ATheft detection apparatus and flattened wire target and method of making sameKNOGO CORP·Filed 1990·Granted Sep 8, 1992·18 cites·57 claims
- 3044US5264829AMethod and apparatus for theft detection using digital signal processingKNOGO CORP·Filed 1992·Granted Nov 23, 1993·13 cites·38 claims
- 3139US5304983AMultiple pulse responder and detection system and method of making and using sameKNOGO CORP·Filed 1991·Granted Apr 19, 1994·10 cites·18 claims
- 3233US4642613AElectronic theft detection apparatus with responder elements on protected articlesKNOGO CORP·Filed 1984·Granted Feb 10, 1987·5 cites·14 claims
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