Patent US2724647A successfully refreshed from Google Patents.
US2724647A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Steel and article for high temperature uses
Assignee: Timken Co
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Filing: 1953-03-26
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Granted: 1955-11-22
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Expires: 1973-03-26
Abstract
No abstract record available.
Inventors
- 👤 Fleischmann Martin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 12:34
CPC Classifications
C; C22; C22C; C22C38/00; C22C38/18; C22C38/40; C22C38/58
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
102 words
A WROUGHT STEEL ARTICLE FORMED FROM AN IRON ALLOY COMPRISING ABOUT 10 TO 20 PER CENT OF CHROMIUM, ABOUT 5 TO 10 PER CENT OF MANGANESE, ABOUT 4 TO 8 PER CENT OF MOLYBDENUM, ABOUT 10 TO 20 PER CENT OF NICKEL, NOT OVER ABOUT 0.1 PER CENT OF CARBON, AND THE REMAINDER IRON TOGETHER WITH IMPURITIES AND ELEMENTS IN AMOUNTS WHICH DO NOT ESSENTIALLY CHANGE THE CHARACTER OF THE ALLOY, AND CHARACTERIZED BY BEING AUSTENTIC AND FREE FROM DELTA IRON WHEN QUENCHED FROM ABOUT 2150*F. AND BY HIGH CREEP AND RUPTURE STRENGTHS AND DUCTILITY UNDER STRESS AT A TEMPERATURE OF 1300*F.
Claim 2
Dependent Claim
102 words
A WROUGHT STEEL ARTICLE FORMED FROM AN IRON ALLOY COMPRISING ABOUT 10 TO 20 PER CENT OF CHROMIUM, ABOUT 5 TO 10 PER CENT OF MANGANESE, ABOUT 4 TO 8 PER CENT OF MOLYBDENUM, ABOUT 10 TO 20 PER CENT OF NICKEL, NOT OVER ABOUT 0.1 PER CENT OF CARBON, AND THE REMAINDER IRON TOGETHER WITH IMPURITIES AND ELEMENTS IN AMOUNTS WHICH DO NOT ESSENTIALLY CHANGE THE CHARACTER OF THE ALLOY, AND CHARACTERIZED BY BEING AUSTENTIC AND FREE FROM DELTA IRON WHEN QUENCHED FROM ABOUT 2150*F. AND BY HIGH CREEP AND RUPTURE STRENGTHS AND DUCTILITY UNDER STRESS AT A TEMPERATURE OF 1300*F.
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) | 1958-11-21 | 1959-05-23 | 1959-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-11-21 | 1963-05-23 | 1963-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-11-21 | 1967-05-23 | 1967-11-22 | $7700.00 | Window Closed / Lapsed |