US3838252A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Protective coatings for magnetically codable credit card
Assignee: Pitney Bowes Inc
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Filing: 1972-02-22
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Granted: 1974-09-24
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Expires: 1992-02-22
Abstract
Abstract The magnetically encoded stripe of a plastic credit card is protected from abrasion and wear by precisely coating the stripe in a manner which does not adversely affect the readability of the magnetically encoded stripe. The coating is a vinyl polymer such as polyvinylchloride applied in a thickness of about 0.1 mills. The polymer is suspended or dissolved in a carrier liquid which is a substantial non-solvent for the material of the magnetic stripe on which it is applied. The magnetic stripe is pre-coated and then applied to the credit card.
Inventors
- 👤 J Hynes
- 👤 J Braca
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 09:18
CPC Classifications
B; B42; B42D; B42D25/00; B42D25/30; B42D25/36; B42D25/369; G; G06; G06K; G06K19/00; G06K19/06; G06K19/06187; G06K19/06196; B42D25/40; B42D25/45; B42D25/455; B42D25/46; B42D2033/04; B42D2033/16; B42D2033/30
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
40 words
The apparatus as defined by claim 1 wherein said plastic material comprises a polyvinyl chloride and said protective coating comprises a polymeric material which is at least dispersible in a carrier liquid which is substantially a non-solvent for polyvinyl chloride.
Claim 2
Dependent Claim
19 words
The article of claim 1 wherein said plastic material is polyvinyl chloride and said protective layer comprises polyvinyl chloride.
Claim 3
Dependent Claim
22 words
The article of claim 3 wherein said polyvinyl chloride copolymer is a film former at a temperature in excess of 200* F.
Claim 4
Dependent Claim
77 words
A magnetically codeable article comprising: a generally rectangular polyvinyl chloride substrate; a magnetic tape stripe extending intermediate two sides of said substrate, said stripe comprising a backing layer of polyvinyl chloride fused to said substrate and a layer of magnetic material coating on said backing layer; and a tape stripe protective layer having a thickness of 0.1 to 0.2 mils coated on said magnetic layer, said protective layer being a polyvinyl chloride bonded to said magnetic layer.
Claim 5
Dependent Claim
19 words
The article of claim 1 wherein said protective layer is substantially flush with the surface of said base member.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-09-23 | 1978-03-25 | 1978-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-23 | 1982-03-25 | 1982-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-23 | 1986-03-25 | 1986-09-24 | $7700.00 | Window Closed / Lapsed |