US3175201A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic storage elements
Assignee: International Business Machines Corp
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Filing: 1962-02-26
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Granted: 1965-03-23
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Expires: 1982-02-26
Abstract
No abstract record available.
Inventors
- 👤 John C Slonczewski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 15:07
CPC Classifications
G; G11; G11C; G11C11/00; G11C11/02; G11C11/16; G11C11/14; G11C11/155; G11C11/165; G11C11/1673; G11C11/1675; G11C11/1693
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
45 words
A THIN MAGNETIC FILM SANDWICH STORAGE ELEMENT HAVING AN EQUIVALENT BIAXIAL ANISOTROPIC CHARACTERISTIC, SAID ELEMENT COMPRISING: (A) TWO SUBSTANTIALLY IDENTICAL THIN MAGNETIC FILMS, EACH HAVING A UNIAXIAL ANISOTROPIC CHARACTERISTIC IN PARALLEL SPACED RELATIONSHIP AND SO ORIENTED THAT THEIR RESPECTIVE EASY AXES LINE AT RIGHT ANGLES,
Claim 2
Dependent Claim
45 words
A THIN MAGNETIC FILM SANDWICH STORAGE ELEMENT HAVING AN EQUIVALENT BIAXIAL ANISOTROPIC CHARACTERISTIC, SAID ELEMENT COMPRISING: (A) TWO SUBSTANTIALLY IDENTICAL THIN MAGNETIC FILMS, EACH HAVING A UNIAXIAL ANISOTROPIC CHARACTERISTIC IN PARALLEL SPACED RELATIONSHIP AND SO ORIENTED THAT THEIR RESPECTIVE EASY AXES LINE AT RIGHT ANGLES,
References Cited (Backward Citations)
US3015807A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-03-22 | 1968-09-21 | 1969-03-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-22 | 1972-09-21 | 1973-03-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-22 | 1976-09-21 | 1977-03-23 | $7700.00 | Window Closed / Lapsed |