US3559175A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Credit card system
Assignee: Individual
•
Filing: 1967-10-23
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Granted: 1971-01-26
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Expires: 1987-10-23
Abstract
Abstract A CREDIT CARD SYSTEM WHEREIN A CREDIT CARD IS CODED BOTH WITH IDENTIFICATION AND CREDIT BALANCE DATA. A DATA PROCESSING SYSTEM READS THE CREDIT BALANCE DATA AT THE TIME OF A PURCHASE. THE PURCHASE AMOUNT IS AUTOMATICALLY SUBSTRACTED FROM THE CREDIT BALANCE, AND THE NEW BALANCE IS STORED IN THE CREDIT CARD. IF THE CREDIT BALANCE IS INSUFFICIENT, THE DATA PROCESSOR TRANSMITS THE IDENTIFICATION DATA TO A CENTRAL DATA FILE TO UPDATE THE BALANCE WHEREUPON THE SALE MAY BE COMPLETED AND A NEW BALANCE STORED IN THE CARD. IF THE BALANCE IS STILL INSUFFICIENT AFTER IT IS UPDATED, THE SALE IS TERMINATED. THE IDENTIFICATION DATA ALSO MAY BE VERIFIED TO DETECT INVALID OR STOLEN CARDS.
Inventors
- 👤 Ivan Dwayne Pomeroy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 19:48
CPC Classifications
G; G07; G07F; G07F7/00; G07F7/08; G06; G06Q; G06Q20/00; G06Q20/38; G06Q20/40; G06Q20/403; G06Q40/00; G06Q40/02; G07F7/0806; G07F7/0833
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-01-25 | 1974-07-27 | 1975-01-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-25 | 1978-07-27 | 1979-01-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-25 | 1982-07-27 | 1983-01-26 | $7700.00 | Window Closed / Lapsed |