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(12) Patent Application: | (11) CA 2347333 |
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(54) English Title: | ELECTROMAGNETIC ANTI-SHOPLIFTING SYSTEM |
(54) French Title: | SYSTEME ANTIVOL A L'ETALAGE ELECTROMAGNETIQUE |
Status: | Deemed Abandoned and Beyond the Period of Reinstatement - Pending Response to Notice of Disregarded Communication |
(51) International Patent Classification (IPC): |
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(72) Inventors : |
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(73) Owners : |
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(71) Applicants : |
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(74) Agent: | |
(74) Associate agent: | |
(45) Issued: | |
(22) Filed Date: | 2001-05-11 |
(41) Open to Public Inspection: | 2002-11-11 |
Availability of licence: | N/A |
Dedicated to the Public: | N/A |
(25) Language of filing: | English |
Patent Cooperation Treaty (PCT): | No |
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(30) Application Priority Data: | None |
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The present invention provides an antitheft system to detect the presence of
an
object which has a label affixed thereto when said object passes through a
surveillance zone comprising an oscillatory electromagnetic interrogation
field
having three separate and distinct vector components produced by driving the
transmitting coils located in housing on either side of said surveillance zone
with
an alternating power source repetitively in and out of phase with respect to
one
another so as to form magnetic lines of flux having one vector component in
the
out-of-phase mode. The signals generated by the label are received by coils in
said housing and are processed by electronic circuitry adapted to distinguish
said
label signals from spurious signals with a high degree of accuracy. The label
can
be deactivated so as to pass through the surveillance zone without triggering
a
system response.
Note: Claims are shown in the official language in which they were submitted.
Note: Descriptions are shown in the official language in which they were submitted.
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Description | Date |
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Inactive: IPC from MCD | 2006-03-12 |
Inactive: IPC from MCD | 2006-03-12 |
Application Not Reinstated by Deadline | 2004-05-11 |
Time Limit for Reversal Expired | 2004-05-11 |
Inactive: Adhoc Request Documented | 2004-02-13 |
Deemed Abandoned - Failure to Respond to Maintenance Fee Notice | 2003-05-12 |
Inactive: Cover page published | 2002-11-11 |
Application Published (Open to Public Inspection) | 2002-11-11 |
Inactive: First IPC assigned | 2001-06-26 |
Inactive: IPC assigned | 2001-06-26 |
Inactive: Office letter | 2001-06-19 |
Application Received - Regular National | 2001-06-13 |
Inactive: Filing certificate - No RFE (English) | 2001-06-13 |
Abandonment Date | Reason | Reinstatement Date |
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2003-05-12 |
Fee Type | Anniversary Year | Due Date | Paid Date |
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Application fee - small | 2001-05-11 |
Note: Records showing the ownership history in alphabetical order.
Current Owners on Record |
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JEAN COURTOT |
Past Owners on Record |
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None |