US3604900A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electronic credit card
Assignee: Sprague Electric Co
•
Filing: 1969-07-07
•
Granted: 1971-09-14
•
Expires: 1989-07-07
Abstract
Abstract An electrically encoded credit card includes encoded information in the form of electrical elements and is adapted for decoding by a card-reading means for advising a merchant as to customer identification and credit rating.
Inventors
- 👤 Charles G Kalt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 04:58
CPC Classifications
G; G06; G06K; G06K19/00; G06K19/06; G06K19/067
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
184 words
In an electronic credit card having laminated-insulative material with electrical elements thereon and terminal areas connected to the electrical elements adapted for external coupling the improvement which consists of sheets of organic polymer insulative material of dielectric properties having at least one sheet interposed between two other sheets which are immediately adjacent to the interposed sheet so that the interposed sheet and the immediately adjacent sheets form a three-layer combination of sheets, a first metallization on a major surface of the interposed sheet, a second metallization on the major surface of one of the adjacent sheets which abuts the interposed sheet, said first and second metalizations being separated by the dielectric material of the interposed sheet and in capacitive relationship, a plurality of edge terminals on said adjacent sheets and at least one metallized conductive strip on said interposed sheet contacting the first metallization and extending to the edge of the interposed sheet and terminating in contact with at least one of the edge terminals on an adjacent sheet whereby the edge terminals provide both vertical conductors and external contact terminals for the card.
Claim 2
Dependent Claim
184 words
In an electronic credit card having laminated-insulative material with electrical elements thereon and terminal areas connected to the electrical elements adapted for external coupling the improvement which consists of sheets of organic polymer insulative material of dielectric properties having at least one sheet interposed between two other sheets which are immediately adjacent to the interposed sheet so that the interposed sheet and the immediately adjacent sheets form a three-layer combination of sheets, a first metallization on a major surface of the interposed sheet, a second metallization on the major surface of one of the adjacent sheets which abuts the interposed sheet, said first and second metalizations being separated by the dielectric material of the interposed sheet and in capacitive relationship, a plurality of edge terminals on said adjacent sheets and at least one metallized conductive strip on said interposed sheet contacting the first metallization and extending to the edge of the interposed sheet and terminating in contact with at least one of the edge terminals on an adjacent sheet whereby the edge terminals provide both vertical conductors and external contact terminals for the card.
Claim 3
Dependent Claim
46 words
The card of claim 1 wherein said sheets are flexibly connected continuously into a folded strip of material, and strip metalizations form conductive paths extending over the folded edges which make the flexible connections so as to provide conductive paths from one sheet to the other.
References Cited (Backward Citations)
US2448761A
Cited
US2774060A
Cited
US2914746A
Cited
US3171100A
Cited
US3387265A
Cited
US3470359A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-09-13 | 1975-03-15 | 1975-09-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-13 | 1979-03-15 | 1979-09-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-13 | 1983-03-15 | 1983-09-14 | $7700.00 | Window Closed / Lapsed |