US3289182A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic memory
Assignee: International Business Machines Corp
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Filing: 1961-12-29
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Granted: 1966-11-29
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Expires: 1981-12-29
Abstract
No abstract record available.
Inventors
- 👤 James C Suits
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 18:44
CPC Classifications
G; G11; G11C; G11C11/00; G11C11/02; G11C11/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
131 words
A DATA STORAGE DEVICE COMPRISING, A FIRST AND A SECOND PLANAR MAGNETIC ELEMENT, EACH OF SAID ELEMENTS MADE OF UNIAXIAL ANISOTROPIC METALLIC MAGNETIC MATERIAL HAVING AN EASY AXIS OF REMANENT FLUX ORIENTATION ANGULARLY DISPLACED WITH RESPECT TO A GIVEN AXIS IN THE PLANE OF THE ELEMENT, SAID ELEMENTS POSITION ONE OVER THE OTHER IN FIELD COUPLING PROXIMITY, MEANS FOR COINCIDENTLY PASSING IN A COMMON DIRECTION A FIRST CURRENT IMPULSE THROUGH SAID FIRST ELEMENT ALONG THE GIVEN AXIS THERETO TO PRODUCE A MAGNETIC FIELD IN SAID SECOND ELEMENT AND A SECOND CURRENT IMPULSE THROUGH SAID SECOND ELEMENT TO PRODUCE A MAGNETIC FIELD IN SAID FIRST ELEMENT FOR SWITCHING BOTH SAID FIRST AND SECOND ELEMENTS FROM AN INITIAL REMANENT ORIENTATION STATE TO AN OPPOSITE ORIENTATION STATE AND MEANS FOR SENSING THE ORIENTATION STATES.
Claim 2
Dependent Claim
131 words
A DATA STORAGE DEVICE COMPRISING, A FIRST AND A SECOND PLANAR MAGNETIC ELEMENT, EACH OF SAID ELEMENTS MADE OF UNIAXIAL ANISOTROPIC METALLIC MAGNETIC MATERIAL HAVING AN EASY AXIS OF REMANENT FLUX ORIENTATION ANGULARLY DISPLACED WITH RESPECT TO A GIVEN AXIS IN THE PLANE OF THE ELEMENT, SAID ELEMENTS POSITION ONE OVER THE OTHER IN FIELD COUPLING PROXIMITY, MEANS FOR COINCIDENTLY PASSING IN A COMMON DIRECTION A FIRST CURRENT IMPULSE THROUGH SAID FIRST ELEMENT ALONG THE GIVEN AXIS THERETO TO PRODUCE A MAGNETIC FIELD IN SAID SECOND ELEMENT AND A SECOND CURRENT IMPULSE THROUGH SAID SECOND ELEMENT TO PRODUCE A MAGNETIC FIELD IN SAID FIRST ELEMENT FOR SWITCHING BOTH SAID FIRST AND SECOND ELEMENTS FROM AN INITIAL REMANENT ORIENTATION STATE TO AN OPPOSITE ORIENTATION STATE AND MEANS FOR SENSING THE ORIENTATION STATES.
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) | 1969-11-28 | 1970-05-30 | 1970-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-28 | 1974-05-30 | 1974-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-28 | 1978-05-30 | 1978-11-29 | $7700.00 | Window Closed / Lapsed |