Patent US3843424A successfully refreshed from Google Patents.
US3843424A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Normal grain growth(110)(001)textured iron-cobalt alloys
Assignee: Westinghouse Electric Corp
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Filing: 1972-02-22
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Granted: 1974-10-22
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Expires: 1992-02-22
Abstract
Abstract 1. AN ALLOY MEMBER WHICH EXHIBITS IMPROVED PERMEABILITIIES AT LOW FIELD STRENGTHS RESULTING FROM CRYSTALLOGRAPHIC ORIENTATION COMPARED TO UNORIENTED MAGNETIC MATERIAL OF THE SAME COMPOSITION CONSISTING ESSENTIALLY OF FROM ABOUT 5% TO ABOUT 35% COBALT, UP TO 2% CHROMIUM, UP TO 1% MANGANESE, UP TO 3% SILICON, LESS THAN 0.005% SULFUR AND THE BALANCE ESSENTIALLY IRON WITH INCIDENTAL IMPURITIES, THE ALLOY HAVING A PRIMARY RECRYSTALLIZED GRAIN STRUCTURE IN WHICH A MAJOR PROPORTION OF THE GRAINS EXHIBIT A (110) TEXTURE AND IN WHICH A MAJOR PROPORTION OF THE ORIENTED GRAINS HAVE CUBE EDGES OF THEIR CRYSTAL LATTICES ALIGNED WITHIN 10* OF THE ROLLING DIRECTION.
Inventors
- 👤 D Thornburg
- 👤 K Foster
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 14:02
CPC Classifications
C; C22; C22C; C22C38/00; C22C38/10; C21; C21D; C21D8/00; C21D8/12; H; H01; H01F; H01F1/00; H01F1/01; H01F1/03; H01F1/12; H01F1/14; C21D8/1216; C21D8/1227
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
102 words
AN ALLOY MEMBER WHICH EXHIBITS IMPROVED PERMEABILITIIES AT LOW FIELD STRENGTHS RESULTING FROM CRYSTALLOGRAPHIC ORIENTATION COMPARED TO UNORIENTED MAGNETIC MATERIAL OF THE SAME COMPOSITION CONSISTING ESSENTIALLY OF FROM ABOUT 5% TO ABOUT 35% COBALT, UP TO 2% CHROMIUM, UP TO 1% MANGANESE, UP TO 3% SILICON, LESS THAN 0.005% SULFUR AND THE BALANCE ESSENTIALLY IRON WITH INCIDENTAL IMPURITIES, THE ALLOY HAVING A PRIMARY RECRYSTALLIZED GRAIN STRUCTURE IN WHICH A MAJOR PROPORTION OF THE GRAINS EXHIBIT A (110) TEXTURE AND IN WHICH A MAJOR PROPORTION OF THE ORIENTED GRAINS HAVE CUBE EDGES OF THEIR CRYSTAL LATTICES ALIGNED WITHIN 10* OF THE ROLLING DIRECTION.
Claim 2
Dependent Claim
102 words
AN ALLOY MEMBER WHICH EXHIBITS IMPROVED PERMEABILITIIES AT LOW FIELD STRENGTHS RESULTING FROM CRYSTALLOGRAPHIC ORIENTATION COMPARED TO UNORIENTED MAGNETIC MATERIAL OF THE SAME COMPOSITION CONSISTING ESSENTIALLY OF FROM ABOUT 5% TO ABOUT 35% COBALT, UP TO 2% CHROMIUM, UP TO 1% MANGANESE, UP TO 3% SILICON, LESS THAN 0.005% SULFUR AND THE BALANCE ESSENTIALLY IRON WITH INCIDENTAL IMPURITIES, THE ALLOY HAVING A PRIMARY RECRYSTALLIZED GRAIN STRUCTURE IN WHICH A MAJOR PROPORTION OF THE GRAINS EXHIBIT A (110) TEXTURE AND IN WHICH A MAJOR PROPORTION OF THE ORIENTED GRAINS HAVE CUBE EDGES OF THEIR CRYSTAL LATTICES ALIGNED WITHIN 10* OF THE ROLLING DIRECTION.
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) | 1977-10-21 | 1978-04-22 | 1978-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-21 | 1982-04-22 | 1982-10-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-21 | 1986-04-22 | 1986-10-22 | $7700.00 | Window Closed / Lapsed |