Patent US2709132A successfully refreshed from Google Patents.
US2709132A
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Ferrous alloys and corrosion and wearresisting articles made therefrom
Assignee: Latrobe Steel Co
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Filing: 1951-10-11
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Granted: 1955-05-24
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Expires: 1971-10-11
Abstract
No abstract record available.
Inventors
- 👤 David J Giles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 18:16
CPC Classifications
C; C22; C22C; C22C38/00; C22C38/18; C22C38/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
96 words
A CORROSION AND WEAR-RESISTING ALLOY COMPRISING ABOUT 0.5% TO 4% CARBON, ABOUT 15% TO 30% CHROMIUM, 0 TO 15% NICKEL, UP TO ABOUT 1% SILICON, UP TO ABOUT 1% MANGANESE, ABOUT 3% TO 13% VANADIUM, AND THE BALANCE SUBSTANTIALLY IRON WITH RESIDUAL IMPURITIES IN ORDINARY AMOUNTS, AND IN WHICH THE CONCENTRATIONS OF CARBON AND VANADIUM WITHIN THE GIVEN LIMITS ARE ADJUSTED SO THAT THE RATIO OF VANADIUM IN EXCESS OF THAT SOLUBLE IN IN THE ALLOY MATRIX TO THE CARBON IN EXCESS OF THAT REQUIRED TO GIVE THE DESIRED HARDENABILITY CHARACTERISTICS IS ABOUT 4.2 TO 1.
Claim 2
Dependent Claim
96 words
A CORROSION AND WEAR-RESISTING ALLOY COMPRISING ABOUT 0.5% TO 4% CARBON, ABOUT 15% TO 30% CHROMIUM, 0 TO 15% NICKEL, UP TO ABOUT 1% SILICON, UP TO ABOUT 1% MANGANESE, ABOUT 3% TO 13% VANADIUM, AND THE BALANCE SUBSTANTIALLY IRON WITH RESIDUAL IMPURITIES IN ORDINARY AMOUNTS, AND IN WHICH THE CONCENTRATIONS OF CARBON AND VANADIUM WITHIN THE GIVEN LIMITS ARE ADJUSTED SO THAT THE RATIO OF VANADIUM IN EXCESS OF THAT SOLUBLE IN IN THE ALLOY MATRIX TO THE CARBON IN EXCESS OF THAT REQUIRED TO GIVE THE DESIRED HARDENABILITY CHARACTERISTICS IS ABOUT 4.2 TO 1.
References Cited (Backward Citations)
US2575218A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-05-23 | 1958-11-22 | 1959-05-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-05-23 | 1962-11-22 | 1963-05-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-05-23 | 1966-11-22 | 1967-05-24 | $7700.00 | Window Closed / Lapsed |