US3270326A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thin film magnetic storage device
Assignee: NCR Voyix Corp
•
Filing: 1960-11-01
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Granted: 1966-08-30
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Expires: 1980-11-01
Abstract
No abstract record available.
Inventors
- 👤 Sidney J Schwartz
- 👤 William F Chenoweth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:45
CPC Classifications
G; G11; G11C; G11C17/00; G11C17/02; H; H03; H03K; H03K17/00; H03K17/51; H03K17/80; H03K17/84; H03K17/86; H03K19/00; H03K19/02; H03K19/16; H03K19/168
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
137 words
A LOGICAL DEVICE COMPRISING: A SUPPORTING SUBSTRATE STRUCTURE HAVING A SURFACE AREA WHICH IS EFFECTIVELY DIVIDED INTO A COORDINATELY ARRANGED MATRIX OF LOCATIONS; A PLURALITY OF DISCRETE AREAS OF MAGNETIZABLE MATERIAL, THE TOTAL NUMBER OF WHICH IS APPRECIABLY LESS THAN THE TOTAL NUMBER OF SAID LOCATIONS, INDIVIDUALLY DISPOSED ON SAID SUBSTRATE AT DIFFERENT ONES OF SAID LOCATIONS AND COLLECTIVELY PROVIDING A PREDETERMINED PATTERN OF VACANT AND NON-VACANT LOCATIONS THROUGHOUT THE MATRIX THEREOF CONFORMING TO A PREDETERMINED CODE, EACH OF THE MAGNETIZABLE AREAS BEING MAGNETICALLY SEPARATED FROM THE OTHERS AND HAVING A PREFERRED DIRECTION OF MAGNETIZATION; MEANS FOR SELECTIVELY APPLYING A MAGNETIZING FORCE TO EACH OF SAID MAGNETIZABLE AREAS AT AN ANGLE WITH RESPECT TO THE PREFERRED DIRECTION OF MAGNETIZATION THEREOF; AND MEANS FOR PROVIDING AN OUTPUT SIGNAL INDICATIVE OF A MAGNETIC FLUX CHANGE WITHIN SAID MAGNETIZABLE AREAS.
Claim 2
Dependent Claim
137 words
A LOGICAL DEVICE COMPRISING: A SUPPORTING SUBSTRATE STRUCTURE HAVING A SURFACE AREA WHICH IS EFFECTIVELY DIVIDED INTO A COORDINATELY ARRANGED MATRIX OF LOCATIONS; A PLURALITY OF DISCRETE AREAS OF MAGNETIZABLE MATERIAL, THE TOTAL NUMBER OF WHICH IS APPRECIABLY LESS THAN THE TOTAL NUMBER OF SAID LOCATIONS, INDIVIDUALLY DISPOSED ON SAID SUBSTRATE AT DIFFERENT ONES OF SAID LOCATIONS AND COLLECTIVELY PROVIDING A PREDETERMINED PATTERN OF VACANT AND NON-VACANT LOCATIONS THROUGHOUT THE MATRIX THEREOF CONFORMING TO A PREDETERMINED CODE, EACH OF THE MAGNETIZABLE AREAS BEING MAGNETICALLY SEPARATED FROM THE OTHERS AND HAVING A PREFERRED DIRECTION OF MAGNETIZATION; MEANS FOR SELECTIVELY APPLYING A MAGNETIZING FORCE TO EACH OF SAID MAGNETIZABLE AREAS AT AN ANGLE WITH RESPECT TO THE PREFERRED DIRECTION OF MAGNETIZATION THEREOF; AND MEANS FOR PROVIDING AN OUTPUT SIGNAL INDICATIVE OF A MAGNETIC FLUX CHANGE WITHIN SAID MAGNETIZABLE AREAS.
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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) | 1969-08-29 | 1970-02-28 | 1970-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-29 | 1974-02-28 | 1974-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-29 | 1978-02-28 | 1978-08-30 | $7700.00 | Window Closed / Lapsed |