US2781264A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Nickel chromium base alloy and a stationary turbine blade made therefrom
Assignee: Rolls Royce PLC
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Filing: 1953-10-20
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Granted: 1957-02-12
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Expires: 1973-10-20
Abstract
No abstract record available.
Inventors
- 👤 Gresham Harold Ernest
- 👤 Wheeler Marcus Alan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 10:03
CPC Classifications
C; C22; C22C; C22C19/00; C22C19/03; C22C19/05; C22C19/051; C22C19/055
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
63 words
AN ALLOY HAVING A THERMAL SHOCK INDEX AT 930* C. OF AT LEAST ABOUT 45, AN ELONGATION NOT SUBSTANTIALLY MORE THAN 1% UNDER LOAD OF 2 LONG TONS PER SQUARE INCH IN 100 HOURS AT 950* C., AND AN ULTIMATE TENSILE STRENGTH AT 950* C. OF ABOUT 20 LONG TONS PER SQUARE INCH, SAID ALLOY CONSISTING BY WEIGHT APPROXIMATELY OF 18% TO 22%
Claim 2
Dependent Claim
63 words
AN ALLOY HAVING A THERMAL SHOCK INDEX AT 930* C. OF AT LEAST ABOUT 45, AN ELONGATION NOT SUBSTANTIALLY MORE THAN 1% UNDER LOAD OF 2 LONG TONS PER SQUARE INCH IN 100 HOURS AT 950* C., AND AN ULTIMATE TENSILE STRENGTH AT 950* C. OF ABOUT 20 LONG TONS PER SQUARE INCH, SAID ALLOY CONSISTING BY WEIGHT APPROXIMATELY OF 18% TO 22%
References Cited (Backward Citations)
GB583845A
Cited
US2403128A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-02-12 | 1960-08-13 | 1961-02-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-02-12 | 1964-08-13 | 1965-02-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-02-12 | 1968-08-13 | 1969-02-12 | $7700.00 | Window Closed / Lapsed |