FI84668C - Resonant etikettkrets och elektroniskt saekerhetssystem foer dess anvaendning. - Google Patents

Resonant etikettkrets och elektroniskt saekerhetssystem foer dess anvaendning. Download PDF

Info

Publication number
FI84668C
FI84668C FI855116A FI855116A FI84668C FI 84668 C FI84668 C FI 84668C FI 855116 A FI855116 A FI 855116A FI 855116 A FI855116 A FI 855116A FI 84668 C FI84668 C FI 84668C
Authority
FI
Finland
Prior art keywords
circuit
resonant
frequency
label
inactivating
Prior art date
Application number
FI855116A
Other languages
English (en)
Finnish (fi)
Swedish (sv)
Other versions
FI84668B (fi
FI855116A (fi
FI855116A0 (fi
Inventor
George Jay Lichtblau
Original Assignee
Lichtblau G J
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=FI84668(C) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Priority claimed from PCT/US1984/000613 external-priority patent/WO1985004975A1/en
Application filed by Lichtblau G J filed Critical Lichtblau G J
Publication of FI855116A publication Critical patent/FI855116A/fi
Publication of FI855116A0 publication Critical patent/FI855116A0/fi
Publication of FI84668B publication Critical patent/FI84668B/fi
Application granted granted Critical
Publication of FI84668C publication Critical patent/FI84668C/fi

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)
FI855116A 1984-04-23 1985-12-20 Resonant etikettkrets och elektroniskt saekerhetssystem foer dess anvaendning. FI84668C (fi)

Applications Claiming Priority (2)

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
US8400613 1984-04-23

Publications (4)

Publication Number Publication Date
FI855116A FI855116A (fi) 1985-12-20
FI855116A0 FI855116A0 (fi) 1985-12-20
FI84668B FI84668B (fi) 1991-09-13
FI84668C true FI84668C (fi) 1991-12-27

Family

ID=22182123

Family Applications (1)

Application Number Title Priority Date Filing Date
FI855116A FI84668C (fi) 1984-04-23 1985-12-20 Resonant etikettkrets och elektroniskt saekerhetssystem foer dess anvaendning.

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)

Families Citing this family (5)

* 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
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

Family Cites Families (8)

* 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
JPS4860499A (da) * 1971-11-29 1973-08-24
JPS4877695A (da) * 1971-12-30 1973-10-18
US3810147A (en) * 1971-12-30 1974-05-07 G Lichtblau Electronic security system
JPS5018200A (da) * 1973-06-18 1975-02-26
US3938044A (en) * 1973-11-14 1976-02-10 Lichtblau G J Antenna apparatus for an electronic security system
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

Also Published As

Publication number Publication date
DK595785A (da) 1985-12-20
FI84668B (fi) 1991-09-13
AU584306B2 (en) 1989-05-25
DK165914C (da) 1993-07-05
BR8407314A (pt) 1986-04-15
NO855242L (no) 1985-12-23
FI855116A (fi) 1985-12-20
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
MA Patent expired

Owner name: LICHTBLAU, GEORGE JAY