Patent US2575216A successfully refreshed from Google Patents.
US2575216A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ferrous alloys and articles made therefrom
Assignee: LATROBE ELECTRIC STEEL Co
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Filing: 1950-05-25
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Granted: 1951-11-13
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Expires: 1970-05-25
Abstract
No abstract record available.
Inventors
- 👤 David J Giles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:33
CPC Classifications
C; C22; C22C; C22C38/00; C22C38/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
65 words
A WATER-HARDENING, ABRASION-RESISTING AND SHOCK-RESISTING STEEL ALLOY COMPRISING ABOUT 0.85% TO 4% CARBON, ABOUT 0.1% TO 0.5% SILICON, ABOUT 0.2% TO 0.7% MANGANESE, LESS THAN ABOUT 2% CHROMIUM, ABOUT 2% TO 12% VANADIUM AND THE BALANCE SUBSTANTIALLY IRON WIHT RESIDUAL IMPURITIES IN ORDINARY AMOUNTS, IN WHICH ALLOY THE VANDAIUM IN EXCESS OF ABOUT 1% IS COMBINED WITH THE CARBON IN A RATIO OF ABOUT 4.2:1.
Claim 2
Dependent Claim
65 words
A WATER-HARDENING, ABRASION-RESISTING AND SHOCK-RESISTING STEEL ALLOY COMPRISING ABOUT 0.85% TO 4% CARBON, ABOUT 0.1% TO 0.5% SILICON, ABOUT 0.2% TO 0.7% MANGANESE, LESS THAN ABOUT 2% CHROMIUM, ABOUT 2% TO 12% VANADIUM AND THE BALANCE SUBSTANTIALLY IRON WIHT RESIDUAL IMPURITIES IN ORDINARY AMOUNTS, IN WHICH ALLOY THE VANDAIUM IN EXCESS OF ABOUT 1% IS COMBINED WITH THE CARBON IN A RATIO OF ABOUT 4.2:1.
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) | 1954-11-12 | 1955-05-14 | 1955-11-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-11-12 | 1959-05-14 | 1959-11-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-11-12 | 1963-05-14 | 1963-11-13 | $7700.00 | Window Closed / Lapsed |