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US6646554B1 Expired / Lapsed US ⏱️ 0.0 years remaining

Identification tag with enhanced security

Assignee: 3M Innovative Properties Co
•
Filing: 2000-08-14
•
Granted: 2003-11-11
•
Expires: 2020-08-14
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Abstract

Abstract A combination tag is disclosed, including a magnetically-responsive element and a radio frequency-responsive element. In one embodiment, the magnetically-responsive element also functions as an antenna for the radio frequency-responsive element.

Inventors

  • 👤 Edward D. Goff
  • 👤 Gerald L. Karel
  • 👤 Chester Piotrowski
  • 👤 Robert A. Sainati
  • 👤 Ching-Long Tsai

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-09 05:32
CPC Classifications
G; G08; G08B; G08B13/00; G08B13/22; G08B13/24; H; H01; H01Q; H01Q1/00; H01Q1/12; H01Q1/22; H01Q1/2208; H01Q1/2225; G06; G06K; G06K19/00; G06K19/06; G06K19/067; G06K19/07; G06K19/0723; G08B13/2402; G08B13/2405; G08B13/2408; G08B13/2414; G08B13/2417; G08B13/2428; G08B13/2431; G08B13/2437; G08B13/2445; G08B13/2465; G08B13/2485; H01Q1/36; H01Q1/38; H01Q7/00; H01Q9/00; H01Q9/04; H01Q9/16; H01Q9/28; H01Q9/285

Claims Analysis

Total Claims: 3
Claim 1
Independent Claim 59 words
An apparatus, comprising: a passive, unpowered radio frequency-responsive element comprising an antenna, and an integrated circuit for storing and updating information in a memory and for communicating information by the antenna; and a magnetic material connected with the radio frequency-responsive element, the magnetic material generating a predetermined characteristic response when the magnetic material is in an alternating magnetic field.
Claim 2
Independent Claim 59 words
An apparatus, comprising: a passive, unpowered radio frequency-responsive element comprising an antenna, and an integrated circuit for storing and updating information in a memory and for communicating information by the antenna; and a magnetic material connected with the radio frequency-responsive element, the magnetic material generating a predetermined characteristic response when the magnetic material is in an alternating magnetic field.
Claim 3
Dependent Claim 13 words
The apparatus of claim 1 , wherein the antenna comprises the magnetic material.

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USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 2006-11-10 2007-05-12 2007-11-11 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 2010-11-10 2011-05-12 2011-11-11 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 2014-11-10 2015-05-12 2015-11-11 $7700.00 Window Closed / Lapsed

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