Patent US2740711A successfully refreshed from Google Patents.
US2740711A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Iron chromium molybdenum titanium base alloy
Assignee: Allegheny Ludlum Steel Corp
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Filing: 1952-04-29
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Granted: 1956-04-03
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Expires: 1972-04-29
Abstract
No abstract record available.
Inventors
- 👤 Schuyler A Herres
- 👤 Thomas K Redden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:51
CPC Classifications
C; C22; C22C; C22C14/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
101 words
A TITANIUM BASE ALLOY COMPOSITION HAVING AN ALL, BETA-PHASE STRUCTURE AS SOLUTION TREATED AT A TEMPERATURE OF ABOUT 120* OR 1500* F., FOLLOWED BY AIR COOLING, WHICH STRUCTURE IS WHOLLY STABLE AT ROOM TEMPERATURE, AND WHICH ALLOY COMPOSITION CONSISTS OF OXYGEN IN THE AMOUNT UP TO ABOUT .20% MAXIMUM, NITROGEN IN THE AMOUNT UP TO ABOUT .10% MAXIMUM, ABOUT 1.5 TO 10% MOLYBDENUM, ABOUT 1.5 TO 11% CHROMIUM, ABOUT 3 TO 8% IRON, AND THE REMAINDER TITANIUM WITH INCIDENTAL IMPURITIES; THE TOTAL METAL ALLOYING CONTENT OF MOLYBDENUM, CHROMIUM AND IRON BEING HIGHLY CRITICAL WITHIN THE RANGE OF ABOUT 11 TO 20%.
Claim 2
Dependent Claim
101 words
A TITANIUM BASE ALLOY COMPOSITION HAVING AN ALL, BETA-PHASE STRUCTURE AS SOLUTION TREATED AT A TEMPERATURE OF ABOUT 120* OR 1500* F., FOLLOWED BY AIR COOLING, WHICH STRUCTURE IS WHOLLY STABLE AT ROOM TEMPERATURE, AND WHICH ALLOY COMPOSITION CONSISTS OF OXYGEN IN THE AMOUNT UP TO ABOUT .20% MAXIMUM, NITROGEN IN THE AMOUNT UP TO ABOUT .10% MAXIMUM, ABOUT 1.5 TO 10% MOLYBDENUM, ABOUT 1.5 TO 11% CHROMIUM, ABOUT 3 TO 8% IRON, AND THE REMAINDER TITANIUM WITH INCIDENTAL IMPURITIES; THE TOTAL METAL ALLOYING CONTENT OF MOLYBDENUM, CHROMIUM AND IRON BEING HIGHLY CRITICAL WITHIN THE RANGE OF ABOUT 11 TO 20%.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-04-03 | 1959-10-03 | 1960-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-04-03 | 1963-10-03 | 1964-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-04-03 | 1967-10-03 | 1968-04-03 | $7700.00 | Window Closed / Lapsed |