Patent US2543841A successfully refreshed from Google Patents.
US2543841A
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Metal alloy especially adapted for use at high temperatures
Assignee: Midvale Co
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Filing: 1948-06-26
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Granted: 1951-03-06
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Expires: 1968-06-26
Abstract
No abstract record available.
Inventors
- 👤 Francis B Foley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:07
CPC Classifications
C; C22; C22C; C22C19/00; C22C19/03; C22C19/05; C22C19/051; C22C19/055
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
110 words
A METAL ALLOY ESPECIALLY USEFUL AS A COMPOSITION FOR STRUCTURES, SUCH AS GAS TURBINES, NORMALLY SUBJECTED TO HIGH TEMPERATURE CONSISTING ESSENTIALLY OF CARBON NOT EXCEEDING 1.50 PER CENT., SMALL PERCENTAGES OF MAGANESE AND SILICON, NICKEL 30 TO 40 PER CENT., CHROMIUM 18 TO 24 PER CENT., COBALT 17 TO 35 PER CENT., TUNGSTEN 4 TO 8 PER CENT., MOLYBDENUM 0 TO SUBSTANTIALLY LESS THAN ONE PER CENT., COLUMBIUM OVER 2 AND NOT OVER 6 PER CENT., NITROGEN .10 TO .20 PER CENT., THE REMAINDER SUBSTANTIALLY ALL IRON, THE PERCENTAGE OF THE INGREDIENTS OTHER THAN IRON BEING SUCH, WITHIN THE SPECIFIED LIMITS, THAT THE PROPORTION OF IRON DOES NOT EXCEED 25%.
Claim 2
Dependent Claim
110 words
A METAL ALLOY ESPECIALLY USEFUL AS A COMPOSITION FOR STRUCTURES, SUCH AS GAS TURBINES, NORMALLY SUBJECTED TO HIGH TEMPERATURE CONSISTING ESSENTIALLY OF CARBON NOT EXCEEDING 1.50 PER CENT., SMALL PERCENTAGES OF MAGANESE AND SILICON, NICKEL 30 TO 40 PER CENT., CHROMIUM 18 TO 24 PER CENT., COBALT 17 TO 35 PER CENT., TUNGSTEN 4 TO 8 PER CENT., MOLYBDENUM 0 TO SUBSTANTIALLY LESS THAN ONE PER CENT., COLUMBIUM OVER 2 AND NOT OVER 6 PER CENT., NITROGEN .10 TO .20 PER CENT., THE REMAINDER SUBSTANTIALLY ALL IRON, THE PERCENTAGE OF THE INGREDIENTS OTHER THAN IRON BEING SUCH, WITHIN THE SPECIFIED LIMITS, THAT THE PROPORTION OF IRON DOES NOT EXCEED 25%.
References Cited (Backward Citations)
US2246078A
Cited
US2432618A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-03-05 | 1954-09-04 | 1955-03-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-03-05 | 1958-09-04 | 1959-03-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-03-05 | 1962-09-04 | 1963-03-06 | $7700.00 | Window Closed / Lapsed |