US2540107A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High-temperature alloys
Assignee: Blaw Knox Co
•
Filing: 1946-09-04
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Granted: 1951-02-06
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Expires: 1966-09-04
Abstract
No abstract record available.
Inventors
- 👤 Ray H English
- 👤 Nathaniel B Ornitz
- 👤 Martin N Ornitz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:04
CPC Classifications
C; C22; C22C; C22C19/00; C22C19/03; C22C19/05; C22C19/051; C22C19/053
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
96 words
A NICKEL-BASE ALLOY HAVING NEW CREEP AND CORROSION-RESISTANT PROPERTIES AT A VERY HIGH TEMPERATURES IN WHICH IN AIR THE SURFACE DOES NOT CORRODE AT A RATE EXCEEDING ABOUT .07 INCH PENETRATION PER YEAR AND THE CREEP IS LESS THAN ABOUT .00013 PER CENT ELONGATION PER HOUR UNDER A TENSILE STRESS OF 143 POUND PER SQUARE INCH, CONSISTING ESSENTIALLY OF NICKEL IN THE RANGE FROM 40% TO 60%, TUNGSTEN IN THE RANGE FROM 4% TO 6.5%, CHROMIUM IN THE RANGE FROM 22% TO 34%, CARBON IN THE RANGE FROM 0.35% TO 0.75%, AND THE BALANCE SUBSTANTIALLY IRON.
Claim 2
Dependent Claim
96 words
A NICKEL-BASE ALLOY HAVING NEW CREEP AND CORROSION-RESISTANT PROPERTIES AT A VERY HIGH TEMPERATURES IN WHICH IN AIR THE SURFACE DOES NOT CORRODE AT A RATE EXCEEDING ABOUT .07 INCH PENETRATION PER YEAR AND THE CREEP IS LESS THAN ABOUT .00013 PER CENT ELONGATION PER HOUR UNDER A TENSILE STRESS OF 143 POUND PER SQUARE INCH, CONSISTING ESSENTIALLY OF NICKEL IN THE RANGE FROM 40% TO 60%, TUNGSTEN IN THE RANGE FROM 4% TO 6.5%, CHROMIUM IN THE RANGE FROM 22% TO 34%, CARBON IN THE RANGE FROM 0.35% TO 0.75%, AND THE BALANCE SUBSTANTIALLY IRON.
References Cited (Backward Citations)
USRE20877E
Cited
US1504338A
Cited
US1572996A
Cited
GB286367A
Cited
US2381459A
Cited
US2396552A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-02-05 | 1954-08-07 | 1955-02-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-02-05 | 1958-08-07 | 1959-02-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-02-05 | 1962-08-07 | 1963-02-06 | $7700.00 | Window Closed / Lapsed |