US3357004A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mated thin film memory element
Assignee: Unisys Corp
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Filing: 1965-10-23
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Granted: 1967-12-05
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Expires: 1985-10-23
Abstract
No abstract record available.
Inventors
- 👤 Robert J Bergman
- 👤 Leory A Prohofsky
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 10:52
CPC Classifications
G; G11; G11C; G11C11/00; G11C11/02; G11C11/08; G11C11/06; G11C11/14; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/4902; Y10T29/49069; Y10T428/00; Y10T428/24; Y10T428/24273
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
116 words
A MAGNETIZABLE MEMORY ELEMENT COMPRISING: A SUBSTRATE MEMBER; A FIRST LAYER OF MAGNETIZABLE MATERIAL; SAID FIRST FILM LAYER HAVING AN ACTIVE BODY PORTION THAT HAS INACTIVE END PORTIONS EXTENDING THEREFROM; A SECOND LAYER OF MAGNETIZABLE MATERIAL HAVING SUBSTANTIALLY SIMILAR MAGNETIC CHARACTERISTICS AND PLANAR CONTOURS AS SAID FIRST LAYER AND SUPERPOSED SAID FIRST LAYER; A FIRST CONDUCTIVE STRIP SANDWICHED BETWEEN AND ENVELOPED BY SAID FIRST AND SECOND LAYERS ONLY IN THE AREA OF SAID BODY PORTIONS; SAID FIRST AND SECOND LAYERS HAVING SUPERPOSED SIDES EXTENDING BEYOND THE EDGES OF SAID FIRST CONDUCTIVE STRIP FOR FORMING A SUSBTANTIALLY-CLOSED FLUX PATH IN A CIRCUMFERENTIAL DIRECTION ABOUT SAID ENVELOPED FIRST CONDUCTIVE STRIP ONLY IN THE AREA OF SAID BODY PORTIONS.
Claim 2
Dependent Claim
116 words
A MAGNETIZABLE MEMORY ELEMENT COMPRISING: A SUBSTRATE MEMBER; A FIRST LAYER OF MAGNETIZABLE MATERIAL; SAID FIRST FILM LAYER HAVING AN ACTIVE BODY PORTION THAT HAS INACTIVE END PORTIONS EXTENDING THEREFROM; A SECOND LAYER OF MAGNETIZABLE MATERIAL HAVING SUBSTANTIALLY SIMILAR MAGNETIC CHARACTERISTICS AND PLANAR CONTOURS AS SAID FIRST LAYER AND SUPERPOSED SAID FIRST LAYER; A FIRST CONDUCTIVE STRIP SANDWICHED BETWEEN AND ENVELOPED BY SAID FIRST AND SECOND LAYERS ONLY IN THE AREA OF SAID BODY PORTIONS; SAID FIRST AND SECOND LAYERS HAVING SUPERPOSED SIDES EXTENDING BEYOND THE EDGES OF SAID FIRST CONDUCTIVE STRIP FOR FORMING A SUSBTANTIALLY-CLOSED FLUX PATH IN A CIRCUMFERENTIAL DIRECTION ABOUT SAID ENVELOPED FIRST CONDUCTIVE STRIP ONLY IN THE AREA OF SAID BODY PORTIONS.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-12-04 | 1971-06-05 | 1971-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-12-04 | 1975-06-05 | 1975-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-12-04 | 1979-06-05 | 1979-12-05 | $7700.00 | Window Closed / Lapsed |