US3094699A
Expired / Lapsed
US
⏱️ 0.0 years remaining
System for magnetically recording data
Assignee: International Business Machines Corp
•
Filing: 1959-03-03
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Granted: 1963-06-18
•
Expires: 1979-03-03
Abstract
No abstract record available.
Inventors
- 👤 Edward J Supernowicz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:49
CPC Classifications
G; G11; G11C; G11C13/00; G11C13/04; G11C13/06
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
104 words
A STORAGE UNIT FOR BINARY DATA REPRESENTATIONS COMPRISING A PLURALITY OF SPACED STORAGE ELEMENTS EACH OF WHICH INCLUDES A FILM MAGNETIC MATERIAL, SAID MATERIAL HAVING A PREFERRED DIRECTION OF MAGNETIZATION WHICH IS STABLE BELOW THE CURIE POINT OF THE MATERIAL AND A TRANSVERSE UNPREFERRED DIRECTION WHICH IS STABLE IN A FIRST TEMPERATURE RANGE AND UNSTABLE IN A SECOND TEMPERATURE RANGE, SAID SECOND RANGE BEING BETWEEN SAID FIRST RANGE AND SAID CURIE POINT, A BIAS MEANS ASSOCIATED WITH SAID ELEMENTS AND ADAPTED WHEN ENERGIZED TO PROVIDE AN EXTERNAL MAGNETIC FIELD HAVING AN AXIS PARALLEL TO SAID UNPREFERRED DIRECTION TO MAGNETIZE SAID MATERIAL IN SAID UN-
References Cited (Backward Citations)
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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) | 1966-06-17 | 1966-12-17 | 1967-06-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-06-17 | 1970-12-17 | 1971-06-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-06-17 | 1974-12-17 | 1975-06-18 | $7700.00 | Window Closed / Lapsed |