US5939984A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combination radio frequency transponder (RF Tag) and magnetic electronic article surveillance (EAS) material
Assignee: Intermec IP Corp
•
Filing: 1998-05-01
•
Granted: 1999-08-17
•
Expires: 2018-05-01
Abstract
Abstract A combination of a radio frequency identification transponder (RFID Tag) and to a magnetic electronic article surveillance (EAS) device is disclosed.
Inventors
- 👤 Michael J. Brady
- 👤 Thomas A. Cofino
- 👤 Richard J. Gambino
- 👤 Paul A. Moskowitz
- 👤 Alejandro G. Schrott
- 👤 Robert J. VON Gutfeld
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 07:31
CPC Classifications
H; H01; H01Q; H01Q1/00; H01Q1/36; G; G06; G06K; G06K19/00; G06K19/04; G06K19/041; G06K19/06; G06K19/067; G06K19/07; G06K19/077; G06K19/07749; G08; G08B; G08B13/00; G08B13/22; G08B13/24; G08B13/2402; G08B13/2405; G08B13/2408; G08B13/2414; G08B13/2417; G08B13/2428; G08B13/2434; G08B13/2437; G08B13/2442; G08B13/2448; H01Q1/12; H01Q1/22; H01Q1/2208; H01Q1/2225; H10; H10W; H10W90/00; H10W90/701; H10W90/751; H10W90/754
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
108 words
An apparatus, comprising: a radio frequency (RF) transponder (tag), the RF tag comprising a tag antenna, tag electronics for storing information in a codable and recodable memory and for communicating information to a base station by modulating reflectance characteristics of the tag antenna, and a tag power supply; and a non linear magnetic material connected with the RF tag, the non linear magnetic material generating a varying electronic article surveillance magnetic field when the non linear magnetic material is in a magnetic field sinusoidally varying with a frequency f 0 , the electronic article surveillance magnetic field varying with a frequency having higher harmonics of f 0 .
Claim 2
Independent Claim
108 words
An apparatus, comprising: a radio frequency (RF) transponder (tag), the RF tag comprising a tag antenna, tag electronics for storing information in a codable and recodable memory and for communicating information to a base station by modulating reflectance characteristics of the tag antenna, and a tag power supply; and a non linear magnetic material connected with the RF tag, the non linear magnetic material generating a varying electronic article surveillance magnetic field when the non linear magnetic material is in a magnetic field sinusoidally varying with a frequency f 0 , the electronic article surveillance magnetic field varying with a frequency having higher harmonics of f 0 .
Claim 3
Dependent Claim
15 words
The apparatus of claim 1, wherein the tag antenna comprises the non linear magnetic material.
Claim 4
Dependent Claim
23 words
The apparatus of claim 2, wherein the tag antenna comprises a first wire electrically connected to a semiconductor device incorporating the tag electronics.
Claim 5
Dependent Claim
14 words
The apparatus of claim 3, wherein the first wire comprises non linear magnetic material.
Claim 6
Dependent Claim
18 words
The apparatus of claim 4, wherein the non linear magnetic material is coated with an electrically conducting material.
Claim 7
Dependent Claim
27 words
The apparatus of claim 3, wherein a second wire cooperates with the first wire to form the tag antenna, the second wire comprising non linear magnetic material.
Claim 8
Dependent Claim
18 words
The apparatus of claim 6, wherein the non linear magnetic material is coated with an electrically conducting material.
Claim 9
Dependent Claim
30 words
The apparatus of claim 2, wherein the tag antenna comprises a patch antenna electrically connected to a semiconductor device incorporating the tag electronics, the patch antenna having a ground plane.
Claim 10
Dependent Claim
18 words
The apparatus of claim 8, wherein the non linear magnetic material is coated with an electrically conducting material.
Claim 11
Dependent Claim
83 words
The apparatus of claim 1, wherein the tag antenna comprises a patch antenna formed by a dielectric sheet having a first side and a second side, a first electrically conducting material attached to the first side, and a second electrically conducting material attached to the second side, wherein a semiconductor device incorporating the tag electronics is electrically connected to the first electrically conducting material and the second electrically conducting material, and wherein the non linear magnetic material is attached to the dielectric sheet.
Claim 12
Dependent Claim
52 words
The apparatus of claim 1, wherein the tag antenna comprises an electrically conducting wire antenna electrically connected to a semiconductor device incorporating the tag electronics, wherein the tag antenna and the semiconductor device are attached to a dielectric material and wherein the non linear magnetic material is attached to the dielectric material.
References Cited (Backward Citations)
US4660025A
Cited
US4940966A
Cited
US4980670A
Cited
US5175419A
Cited
US5313192A
Cited
US5729607A
Cited
US5528222A
Cited
US5682143A
Cited
US5673037A
Cited
US5550547A
Cited
US5565847A
Cited
US5552778A
Cited
US5554974A
Cited
US5538803A
Cited
US5563583A
Cited
US5635693A
Cited
US5521601A
Cited
US5729201A
Cited
US5831532A
Cited
US5606323A
Cited
US5680106A
Cited
US5801699A
Cited
US5786626A
Cited
US5736929A
Cited
US5821859A
Cited
US5739754A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2002-08-16 | 2003-02-15 | 2003-08-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2006-08-16 | 2007-02-15 | 2007-08-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2010-08-16 | 2011-02-15 | 2011-08-17 | $7700.00 | Window Closed / Lapsed |