US2906979A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making single crystal cores of a ferrite including cobalt and cores so made
Assignee: AT&T Inc
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Filing: 1954-10-01
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Granted: 1959-09-29
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Expires: 1974-10-01
Abstract
No abstract record available.
Inventors
- 👤 Richard M Bozorth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:15
CPC Classifications
C; C04; C04B; C04B35/00; C04B35/01; C04B35/26; C04B35/265; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/4902; Y10T29/49075
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
75 words
A HOLLOW RECTANGULAR MAGNETIC CORE ELEMENT OF THE FERRITE CO0.32ZN0.22FE2.2O4 CUT FROM A SINGLE CRYSTAL AND HAVING THE FRONT AND REAR SURFACES OF THE CORE PARALLEL TO A PLANE DEFINED BY TWO CRYSTALLOGRAPHIC AXES OF THE SINGLE CRYSTAL, EACH OF THE LONGITUDINAL AXES OF THE FOUR PORTIONS OF THE HOLLOW RECTANGULAR ELEMENT BEING PARALLEL TO ONE OF THE TWO AXES OF THE CRYSTAL, SAID CORE HAVING BEEN MAGNETICALLY ANNELED TO HAVE ASUBSTANTIALLY RETANGULAR HYSTERESIS LOOP.
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) | 1962-09-28 | 1963-03-30 | 1963-09-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-09-28 | 1967-03-30 | 1967-09-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-09-28 | 1971-03-30 | 1971-09-29 | $7700.00 | Window Closed / Lapsed |