Patent US3278913A successfully refreshed from Google Patents.
US3278913A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High capacity memory
Assignee: Massachusetts Institute of Technology
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Filing: 1962-09-26
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Granted: 1966-10-11
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Expires: 1982-09-26
Abstract
No abstract record available.
Inventors
- 👤 Jack I Raffel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 11:12
CPC Classifications
G; G11; G11C; G11C7/00; G11C5/00; G11C5/02; H; H01; H01F; H01F10/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
173 words
A HIGH CAPACIT THIN FILM MEMORY ARRAY COMPRISING, A FIRST AND SECOND PLURALITY OF SPACED STRIPS OF THIN FILM MAGNETIC MATERIAL HAVING AN EASY AXIS OF MAGNETIZATION ALONG THE LENGTH OF SAID STRIP, THE LENGTH OF SAID STRIPS BEING AT LEAST SEVERAL ORDERS OF MAGNITUDE GREATER THAN THE WIDTH OF SAID STRIPS, SAID PLURALITY OF STRIPS HAVING DEPOSITED THEREON AN ELECTRICAL CONDUCTOR COEXTENSIVE WITH THE LENGTH OF WIDTH OF SAID MAGNETIC STRIP, A SECOND PLURALITY OF CONDUCTIVE STRIPS, MEANS FOR SUPPORTING SAID FIRST AND SECOND PLURALITY OF STRIPS IN MUTUALLY ORTHOGONAL RELATION TO PROVIDE A PLURALITY OF CROSSOVER REGIONS OF SAID STRIPS WHERE MAGNETIC COUPLING EXISTS BETWEEN SAID STRIPS, SAID ELECTRICAL CONDUCTORS BEING ELECTRICALLY INSULATED AT EACH CROSSOVER BY AN INSULATING FILM ON AT LEAST ONE OF SAID PLURALITY OF CONDUCTIVE STRIPS, MEANS FOR ELECTRICALLY ENERGIZING AT LEAST ONE CONDUCTOR IN EACH OF SAID FIRST AND SECOND PLURALITIES OF CONDUCTORS TO PROVIDE THE MAGNETIZING FORCE REQUIRED TO CHANGE THE FLUX DIRECTION IN THE MAGNETIC FILM AT THE CROSSOVER REGION OF SAID ENERGIZED CONDUCTORS.
Claim 2
Dependent Claim
173 words
A HIGH CAPACIT THIN FILM MEMORY ARRAY COMPRISING, A FIRST AND SECOND PLURALITY OF SPACED STRIPS OF THIN FILM MAGNETIC MATERIAL HAVING AN EASY AXIS OF MAGNETIZATION ALONG THE LENGTH OF SAID STRIP, THE LENGTH OF SAID STRIPS BEING AT LEAST SEVERAL ORDERS OF MAGNITUDE GREATER THAN THE WIDTH OF SAID STRIPS, SAID PLURALITY OF STRIPS HAVING DEPOSITED THEREON AN ELECTRICAL CONDUCTOR COEXTENSIVE WITH THE LENGTH OF WIDTH OF SAID MAGNETIC STRIP, A SECOND PLURALITY OF CONDUCTIVE STRIPS, MEANS FOR SUPPORTING SAID FIRST AND SECOND PLURALITY OF STRIPS IN MUTUALLY ORTHOGONAL RELATION TO PROVIDE A PLURALITY OF CROSSOVER REGIONS OF SAID STRIPS WHERE MAGNETIC COUPLING EXISTS BETWEEN SAID STRIPS, SAID ELECTRICAL CONDUCTORS BEING ELECTRICALLY INSULATED AT EACH CROSSOVER BY AN INSULATING FILM ON AT LEAST ONE OF SAID PLURALITY OF CONDUCTIVE STRIPS, MEANS FOR ELECTRICALLY ENERGIZING AT LEAST ONE CONDUCTOR IN EACH OF SAID FIRST AND SECOND PLURALITIES OF CONDUCTORS TO PROVIDE THE MAGNETIZING FORCE REQUIRED TO CHANGE THE FLUX DIRECTION IN THE MAGNETIC FILM AT THE CROSSOVER REGION OF SAID ENERGIZED CONDUCTORS.
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) | 1969-10-10 | 1970-04-11 | 1970-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-10 | 1974-04-11 | 1974-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-10 | 1978-04-11 | 1978-10-11 | $7700.00 | Window Closed / Lapsed |