AU584306B2 - Electronically detectable and deactivatable security tag - Google Patents

Electronically detectable and deactivatable security tag

Info

Publication number
AU584306B2
AU584306B2 AU28233/84A AU2823384A AU584306B2 AU 584306 B2 AU584306 B2 AU 584306B2 AU 28233/84 A AU28233/84 A AU 28233/84A AU 2823384 A AU2823384 A AU 2823384A AU 584306 B2 AU584306 B2 AU 584306B2
Authority
AU
Australia
Prior art keywords
resonant
frequency
substrate
conductive areas
circuit
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
AU28233/84A
Other languages
English (en)
Other versions
AU2823384A (en
Inventor
George Jay Lichtblau
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Checkpoint Systems Inc
Original Assignee
Arthur D Little Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=22182123&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=AU584306(B2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Arthur D Little Inc filed Critical Arthur D Little Inc
Priority claimed from PCT/US1984/000613 external-priority patent/WO1985004975A1/en
Publication of AU2823384A publication Critical patent/AU2823384A/en
Application granted granted Critical
Publication of AU584306B2 publication Critical patent/AU584306B2/en
Assigned to CHECKPOINT SYSTEMS, INC. reassignment CHECKPOINT SYSTEMS, INC. Alteration of Name(s) in Register under S187 Assignors: LICHTBLAU, GEORGE JAY
Anticipated expiration legal-status Critical
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00—Burglar, theft or intruder alarms
    • G08B13/22—Electrical actuation
    • G08B13/24—Electrical actuation by interference with electromagnetic field distribution
    • G08B13/2402—Electronic Article Surveillance [EAS], i.e. systems using tags for detecting removal of a tagged item from a secure area, e.g. tags for detecting shoplifting
    • G08B13/2405—Electronic Article Surveillance [EAS], i.e. systems using tags for detecting removal of a tagged item from a secure area, e.g. tags for detecting shoplifting characterised by the tag technology used
    • G08B13/2414—Electronic Article Surveillance [EAS], i.e. systems using tags for detecting removal of a tagged item from a secure area, e.g. tags for detecting shoplifting characterised by the tag technology used using inductive tags
    • G08B13/242—Tag deactivation

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Computer Security & Cryptography (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Burglar Alarm Systems (AREA)
  • Radar Systems Or Details Thereof (AREA)
AU28233/84A 1984-04-23 1984-04-23 Electronically detectable and deactivatable security tag Expired AU584306B2 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US1984/000613 WO1985004975A1 (en) 1982-05-10 1984-04-23 Resonant tag and deactivator for use in an electronic security system

Publications (2)

Publication Number Publication Date
AU2823384A AU2823384A (en) 1985-11-15
AU584306B2 true AU584306B2 (en) 1989-05-25

Family

ID=22182123

Family Applications (1)

Application Number Title Priority Date Filing Date
AU28233/84A Expired AU584306B2 (en) 1984-04-23 1984-04-23 Electronically detectable and deactivatable security tag

Country Status (8)

Country Link
JP (1) JPS61501947A (da)
AU (1) AU584306B2 (da)
BR (1) BR8407314A (da)
DK (1) DK165914C (da)
FI (1) FI84668C (da)
MC (1) MC1736A1 (da)
NO (1) NO169411C (da)
ZA (1) ZA844812B (da)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU613817B2 (en) * 1986-09-29 1991-08-08 Sensormatic Electronics Corporation Deactivatable alarm tag and methods of making and deactivating it

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4846922A (en) * 1986-09-29 1989-07-11 Monarch Marking Systems, Inc. Method of making deactivatable tags
US5103210A (en) * 1990-06-27 1992-04-07 Checkpoint Systems, Inc. Activatable/deactivatable security tag for use with an electronic security system
CH682265A5 (da) * 1991-02-12 1993-08-13 Actron Entwicklungs Ag
US5341125A (en) * 1992-01-15 1994-08-23 Sensormatic Electronics Corporation Deactivating device for deactivating EAS dual status magnetic tags

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3624631A (en) * 1970-04-27 1971-11-30 Sanders Associates Inc Pilferage control system
US3810147A (en) * 1971-12-30 1974-05-07 G Lichtblau Electronic security system
US3938044A (en) * 1973-11-14 1976-02-10 Lichtblau G J Antenna apparatus for an electronic security system

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4860499A (da) * 1971-11-29 1973-08-24
JPS4877695A (da) * 1971-12-30 1973-10-18
JPS5018200A (da) * 1973-06-18 1975-02-26
JPS5230836A (en) * 1975-09-03 1977-03-08 Tokai Pulp Kk Process for producing adhesives based on modified ureas
JPS5242393A (en) * 1975-09-30 1977-04-01 Dainippon Printing Co Ltd Electronic type detector

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3624631A (en) * 1970-04-27 1971-11-30 Sanders Associates Inc Pilferage control system
US3810147A (en) * 1971-12-30 1974-05-07 G Lichtblau Electronic security system
US3938044A (en) * 1973-11-14 1976-02-10 Lichtblau G J Antenna apparatus for an electronic security system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU613817B2 (en) * 1986-09-29 1991-08-08 Sensormatic Electronics Corporation Deactivatable alarm tag and methods of making and deactivating it

Also Published As

Publication number Publication date
DK595785A (da) 1985-12-20
FI84668B (fi) 1991-09-13
DK165914C (da) 1993-07-05
BR8407314A (pt) 1986-04-15
NO855242L (no) 1985-12-23
FI855116A (fi) 1985-12-20
FI84668C (fi) 1991-12-27
JPS61501947A (ja) 1986-09-04
FI855116A0 (fi) 1985-12-20
AU2823384A (en) 1985-11-15
NO169411C (no) 1992-06-17
NO169411B (no) 1992-03-09
DK595785D0 (da) 1985-12-20
DK165914B (da) 1993-02-08
ZA844812B (en) 1985-02-27
JPH0340439B2 (da) 1991-06-18
MC1736A1 (fr) 1986-12-15

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Legal Events

Date Code Title Description
PC Assignment registered

Owner name: CHECKPOINT SYSTEMS, INC.

Free format text: FORMER OWNER WAS: GEORGE JAY LICHTBLAU