US3183579A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic memory
Assignee: RCA Corp
•
Filing: 1960-05-31
•
Granted: 1965-05-18
•
Expires: 1980-05-31
Abstract
No abstract record available.
Inventors
- 👤 George R Briggs
- 👤 Shahbender Rabah
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:08
CPC Classifications
G; G11; G11C; G11C5/00; G11C5/02; G11C5/04; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/4902; Y10T29/49069
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
126 words
A METHOD OF MAKING A MEMORY COMPRISING THE STEPS OF APPLYING AN INSULATOR ON A SHEET OF MAGNETIC MATERIAL; FORMING AT LEAST A SINGLE CONDUCTIVE LEAD ON THE INSULATOR; APPLYING A SECOND INSULATOR OVER THE CONDUCTIVE LEAD AND INSULATOR SO AS TO INSULATE THE LEAD; PLACING AN ELEMENT FORMED OF SHEET MAGNETIC MATERIAL WHICH HAS THE SAME MAGNETIC PROPERTIES AS THE FIRST-MENTIONED MAGNETIC MATERIAL OVER THE INSULATED CONDUTIVE LEAD; MELTING RESTRICTED AREAS OF THE MAGNETIC MATERIAL TO FORM PERMANENT MAGNETIC CONNECTIONS BETWEEN THE ELEMENT AND THE SHEET OF MAGNETIC MATERIAL IN SUCH MANNER THAT A CONTINUOUS, CLOSED PATH IS FORMED THROUGH WHICH THE LEAD PASSES; AND ANNEALING THE MEMORY THUS MADE IN ORDER TO IMPROVE THE MAGNETIC PROPERTIES OF THE SHEET AND ELEMENT OF MAGNETIC MATERIAL.
Claim 2
Independent Claim
126 words
A METHOD OF MAKING A MEMORY COMPRISING THE STEPS OF APPLYING AN INSULATOR ON A SHEET OF MAGNETIC MATERIAL; FORMING AT LEAST A SINGLE CONDUCTIVE LEAD ON THE INSULATOR; APPLYING A SECOND INSULATOR OVER THE CONDUCTIVE LEAD AND INSULATOR SO AS TO INSULATE THE LEAD; PLACING AN ELEMENT FORMED OF SHEET MAGNETIC MATERIAL WHICH HAS THE SAME MAGNETIC PROPERTIES AS THE FIRST-MENTIONED MAGNETIC MATERIAL OVER THE INSULATED CONDUTIVE LEAD; MELTING RESTRICTED AREAS OF THE MAGNETIC MATERIAL TO FORM PERMANENT MAGNETIC CONNECTIONS BETWEEN THE ELEMENT AND THE SHEET OF MAGNETIC MATERIAL IN SUCH MANNER THAT A CONTINUOUS, CLOSED PATH IS FORMED THROUGH WHICH THE LEAD PASSES; AND ANNEALING THE MEMORY THUS MADE IN ORDER TO IMPROVE THE MAGNETIC PROPERTIES OF THE SHEET AND ELEMENT OF MAGNETIC MATERIAL.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-05-17 | 1968-11-16 | 1969-05-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-05-17 | 1972-11-16 | 1973-05-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-05-17 | 1976-11-16 | 1977-05-18 | $7700.00 | Window Closed / Lapsed |