US2602736A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oxidation-carburization resistant alloy
Assignee: Allegheny Ludlum Steel Corp
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Filing: 1950-01-12
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Granted: 1952-07-08
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Expires: 1970-01-12
Abstract
No abstract record available.
Inventors
- 👤 Claude M Sheridan
- 👤 Theodore A Pruger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:05
CPC Classifications
C; C22; C22C; C22C38/00; C22C38/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
63 words
AN IMPROVED FERROUS ALLOY WHICH CONTAINS UP TO ABOT 20% MAXIMUM CARBON, ABOUT 22 TO 40% NICKEL, ABOUT 1 TO 5% SILICON, ABOUT .5 TO 4% ZICRONIUM, THE REMAINDER IRON WITH INCIDENTAL IMPURITIES; THE SILICON, NICKEL AND ZIRCONIUM BEING ESSENTIAL ELEMENTS AND CRITICAL WITHIN THE RANGES STATED, AND THE ALLOY BEING CHARACTERIZED BY ITS HIGH RESISTANCE TO OXIDATION AND CARBURIZATION AT HIGH TEMPERTURE.
Claim 2
Dependent Claim
63 words
AN IMPROVED FERROUS ALLOY WHICH CONTAINS UP TO ABOT 20% MAXIMUM CARBON, ABOUT 22 TO 40% NICKEL, ABOUT 1 TO 5% SILICON, ABOUT .5 TO 4% ZICRONIUM, THE REMAINDER IRON WITH INCIDENTAL IMPURITIES; THE SILICON, NICKEL AND ZIRCONIUM BEING ESSENTIAL ELEMENTS AND CRITICAL WITHIN THE RANGES STATED, AND THE ALLOY BEING CHARACTERIZED BY ITS HIGH RESISTANCE TO OXIDATION AND CARBURIZATION AT HIGH TEMPERTURE.
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) | 1955-07-08 | 1956-01-07 | 1956-07-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-07-08 | 1960-01-07 | 1960-07-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-07-08 | 1964-01-07 | 1964-07-08 | $7700.00 | Window Closed / Lapsed |