US2768427A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Permanently magnetisable alloys and the production thereof
Assignee: Deutsche Edelstahlwerke AG
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Filing: 1952-07-29
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Granted: 1956-10-30
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Expires: 1972-07-29
Abstract
No abstract record available.
Inventors
- 👤 Frelm Fritz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:53
CPC Classifications
C; C22; C22C; C22C33/00; C22C33/02; C22C33/0257; C22C33/0278; C22C33/0285; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/9265; Y10S428/928
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
64 words
PROCESS FOR IMPROVING THE STRUCTURE AND MAGNETIC PROPERTIES OF AGE-HARDENABLE PERMANENT MAGNET ALLOYS ESSENTIALLY MADE BY SINTERING POWDERED MATERIAL CONSISTING ESSENTIALLY OF FROM 5% TO 40% OF NICKEL, FROM 3% TO 20% OF ALUMINIUM AND THE REMAINDER IRON, WHICH CONSISTS INCORPORATING BORON IN AN AMOUNT OF FROM 0.001% TO 0.15% IN THE SAID MATERIAL AND THEN EFFECTING THE SINTERING OPERATION ON THE BORON-CONTAINING MATERIAL.
Claim 2
Dependent Claim
64 words
PROCESS FOR IMPROVING THE STRUCTURE AND MAGNETIC PROPERTIES OF AGE-HARDENABLE PERMANENT MAGNET ALLOYS ESSENTIALLY MADE BY SINTERING POWDERED MATERIAL CONSISTING ESSENTIALLY OF FROM 5% TO 40% OF NICKEL, FROM 3% TO 20% OF ALUMINIUM AND THE REMAINDER IRON, WHICH CONSISTS INCORPORATING BORON IN AN AMOUNT OF FROM 0.001% TO 0.15% IN THE SAID MATERIAL AND THEN EFFECTING THE SINTERING OPERATION ON THE BORON-CONTAINING MATERIAL.
References Cited (Backward Citations)
US1154701A
Cited
US1633258A
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US1968067A
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FR749713A
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US2107122A
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US2192743A
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US2225424A
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US2384450A
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US2401087A
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US2694790A
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US2499862A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-10-30 | 1960-04-30 | 1960-10-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-10-30 | 1964-04-30 | 1964-10-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-10-30 | 1968-04-30 | 1968-10-30 | $7700.00 | Window Closed / Lapsed |