US4851610A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic card protection system
Assignee: Integrated Card-Gard Corp
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Filing: 1988-04-18
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Granted: 1989-07-25
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Expires: 2008-04-18
Abstract
Abstract A protective device for protecting the information on magnetically encoded areas of plastic cards comprising strips of a ferro-magnetic amorphous composition having a metal-glass characteristic situated adjacent and covering the magnetically encoded areas on either side so as to redirect any corrupting electromagnetic and statomagnetic fields. In a preferred embodiment, the protective strips are incorporated in a card holding unit.
Inventors
- 👤 Kenneth L. LeBlanc
- 👤 Gavin M. Hall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 21:14
CPC Classifications
G; G06; G06K; G06K19/00; G06K19/02
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
48 words
A protective device for protecting the information on magnetically encoded areas of plastic cards comprising strips of a ferromagnetic amorphous composition having a metal-glass characteristic to be situated adjacent and covering magnetically encoded areas on either side of plastic cards so as to redirect any corrupting electromagnetic fields.
Claim 2
Dependent Claim
48 words
A protective device for protecting the information on magnetically encoded areas of plastic cards comprising strips of a ferromagnetic amorphous composition having a metal-glass characteristic to be situated adjacent and covering magnetically encoded areas on either side of plastic cards so as to redirect any corrupting electromagnetic fields.
Claim 3
Dependent Claim
23 words
A device as claimed in claim 1 in which said amorphous composition comprises an alloy containing the elements iron, boron, silicon and cobalt.
Claim 4
Dependent Claim
27 words
A device as claimed in claim 2 in which said alloy is 67 percent iron, 14 percent boron, 1 percent silicon and 18 percent cobalt by weight.
Claim 5
Dependent Claim
22 words
A device as claimed in claim 1 in which said amorphous composition comprises an alloy containing the elements iron, boron and silicon.
Claim 6
Dependent Claim
24 words
A device as claimed in claim 4 in which said alloy is 79 percent iron, 16 percent boron and 5 percent silicon by weight.
Claim 7
Dependent Claim
23 words
A device as claimed in claim 1 in which said amorphous composition comprises an alloy containing the elements iron, nickel, molybdenum and boron.
Claim 8
Dependent Claim
27 words
A device as claimed in claim 6 in which said alloy is 40 percent iron, 38 percent nickel, 4 percent molybdenum, and 18 percent boron by weight.
Claim 9
Dependent Claim
29 words
A device as claimed in claim 1 in which said strips have a saturation inductance of slightly greater than 10,000 gauss and a saturation permeability of approximately 500,000 gauss/oersted.
Claim 10
Dependent Claim
69 words
A device as claimed in claim 1 in combination with card holding means having an essentially rectangular shape with pockets adapted for receiving plastic cards on either side of a central folding axis, said strips being positioned in said pockets such that upon folding the card holding means about its central axis said strips are positioned on either side of magnetically encoded areas on either side of plastic cards.
Claim 11
Dependent Claim
26 words
A device as claimed in claim 1 in which said strips have a self-adhesive surface whereby said strips may be attached in existing card holding means.
References Cited (Backward Citations)
US4141400A
Cited
US4438164A
Cited
US4450955A
Cited
US4514586A
Cited
US4647714A
Cited
US4593736A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-07-24 | 1993-01-23 | 1993-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-07-24 | 1997-01-23 | 1997-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-07-24 | 2001-01-23 | 2001-07-25 | $7700.00 | Window Closed / Lapsed |