US2695844A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High-temperature cobalt base alloys
Assignee: Armco Inc
•
Filing: 1949-09-28
•
Granted: 1954-11-30
•
Expires: 1969-09-28
Abstract
No abstract record available.
Inventors
- 👤 Jr William Charles Clarke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:53
CPC Classifications
C; C22; C22C; C22C19/00; C22C19/07
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
51 words
HIGH TEMPERATURE COBALT ALLOY HAVING GOOD HOT WORKING PROPERTIES AND GREAT HIGH TEMPERATURE STRENGTH AND RESISTANCE TO CREEP, CONSISTING OF ABOUT 12% TO 25% CHROMIUM, 1.5% TO 3.5% MOLYBDENUM, 2.5% TO 4.0% COPPER, MANGANESE UP TO ABOUT 2%, SILICON UP TO 1.5%, CARBON UP TO ABOUT 0.35%, AND THE REMAINDER COBALT.
Claim 2
Dependent Claim
51 words
HIGH TEMPERATURE COBALT ALLOY HAVING GOOD HOT WORKING PROPERTIES AND GREAT HIGH TEMPERATURE STRENGTH AND RESISTANCE TO CREEP, CONSISTING OF ABOUT 12% TO 25% CHROMIUM, 1.5% TO 3.5% MOLYBDENUM, 2.5% TO 4.0% COPPER, MANGANESE UP TO ABOUT 2%, SILICON UP TO 1.5%, CARBON UP TO ABOUT 0.35%, AND THE REMAINDER COBALT.
References Cited (Backward Citations)
US1115239A
Cited
US1587992A
Cited
US1685570A
Cited
US1945679A
Cited
US2081392A
Cited
US2108051A
Cited
US2072911A
Cited
FR832391A
Cited
US2246078A
Cited
US2309136A
Cited
US2495063A
Cited
US2509801A
Cited
US2509800A
Cited
US2536034A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-11-29 | 1958-05-31 | 1958-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-11-29 | 1962-05-31 | 1962-11-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-11-29 | 1966-05-31 | 1966-11-30 | $7700.00 | Window Closed / Lapsed |