US2562543A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shock resistant alloy steel
Assignee: Allegheny Ludlum Steel Corp
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Filing: 1950-01-06
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Granted: 1951-07-31
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Expires: 1970-01-06
Abstract
No abstract record available.
Inventors
- 👤 Gippert Le Roy Edward
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 12:16
CPC Classifications
C; C22; C22C; C22C38/00; C22C38/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
53 words
A FERROUS-BASE ALLOY WHICH CONTAINS ABOUT .50 TO 1.50% CARBON, ABOUT .50 TO 5.00% TUNGSTEN, ABOUT .50 TO 5.00% COBALT, THE REMAINDER IRON; THE TUNGSTEN AND COBALT BEING ESSENTIALLY WITHIN EQUAL RANGE AND THE ALLOY BEING CHARACTERIZED BY ITS LOW HARDENABILITY WITH ITS IMPROVED IMPACT WEAR RESISTANCE, AND BY ITS EXTREMELY LONG LIFE.
Claim 2
Dependent Claim
53 words
A FERROUS-BASE ALLOY WHICH CONTAINS ABOUT .50 TO 1.50% CARBON, ABOUT .50 TO 5.00% TUNGSTEN, ABOUT .50 TO 5.00% COBALT, THE REMAINDER IRON; THE TUNGSTEN AND COBALT BEING ESSENTIALLY WITHIN EQUAL RANGE AND THE ALLOY BEING CHARACTERIZED BY ITS LOW HARDENABILITY WITH ITS IMPROVED IMPACT WEAR RESISTANCE, AND BY ITS EXTREMELY LONG LIFE.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-07-30 | 1955-01-29 | 1955-07-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-07-30 | 1959-01-29 | 1959-07-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-07-30 | 1963-01-29 | 1963-07-31 | $7700.00 | Window Closed / Lapsed |