US3298005A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thick film read-only memory
Assignee: International Business Machines Corp
•
Filing: 1966-01-03
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Granted: 1967-01-10
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Expires: 1986-01-03
Abstract
No abstract record available.
Inventors
- 👤 Richard E Matick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 06:23
CPC Classifications
G; G11; G11C; G11C17/00; G11C17/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
77 words
IN A MEMORY, A PLURALITY OF THICK MAGNETIC FILMS HAVING UNIAXIAL ANISOTROPIC CHARACTERISTICS AND WHEREIN THE INHERENT DEMAGNETIZATION FORCE EXCEEDS THE THE INHERENT COERCIVE FORCE, MEANS FOR STORING BINARY INFORMATION IN SAID MAGNETIC FILMS, SAID STORING MEANS INCLUDING MEANS FOR SATURATING PARTICULAR ONES OF SAID MAGNETIC FILM TO REGISTER A FIRST BINARY QUANTITY, A SECOND BINARY QUANTITY BEING DEFINED BY A MAGNETIC FILM BEING IN AN UNSATURATED CONDITION, AND MEANS FOR READING BINARY INFORMATION FROM SAID MEMORY.
Claim 2
Dependent Claim
77 words
IN A MEMORY, A PLURALITY OF THICK MAGNETIC FILMS HAVING UNIAXIAL ANISOTROPIC CHARACTERISTICS AND WHEREIN THE INHERENT DEMAGNETIZATION FORCE EXCEEDS THE THE INHERENT COERCIVE FORCE, MEANS FOR STORING BINARY INFORMATION IN SAID MAGNETIC FILMS, SAID STORING MEANS INCLUDING MEANS FOR SATURATING PARTICULAR ONES OF SAID MAGNETIC FILM TO REGISTER A FIRST BINARY QUANTITY, A SECOND BINARY QUANTITY BEING DEFINED BY A MAGNETIC FILM BEING IN AN UNSATURATED CONDITION, AND MEANS FOR READING BINARY INFORMATION FROM SAID MEMORY.
References Cited (Backward Citations)
US3126529A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-01-09 | 1970-07-11 | 1971-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-09 | 1974-07-11 | 1975-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-09 | 1978-07-11 | 1979-01-10 | $7700.00 | Window Closed / Lapsed |