Patent US2974036A successfully refreshed from Google Patents.
US2974036A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High temperature cobalt-base alloy
Assignee: Sierra Metals Corp
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Filing: 1958-07-28
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Granted: 1961-03-07
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Expires: 1978-07-28
Abstract
No abstract record available.
Inventors
- 👤 Rudolf H Thielemann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 01:17
CPC Classifications
C; C22; C22C; C22C19/00; C22C19/07
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
74 words
A METAL ALLOY COMPOSED OF, BY WEIGHT, FROM ABOUT 15 TO ABOUT 30 PERCENT OF CHROMIUM, FROM ABOUT 5 TO ABOUT 15 PERCENT OF TUNGSTEN, FROM ABOUT 0.5 TO ABOUT 20 PERCENT OF TANTALUM, FROM ABOUT 0.01 TO ABOUT 3 PERCENT OF ZIRCONIUM, FROM ABOUT 0.1 TO ABOUT 1.3 PERCENT OF CARBON, AND THE BALANCE COBALT EXCEPT FOR IMPURITIES AND MINOR ALLOYING CONSTITUENTS WHICH DO NOT SUBSTANTIALLY AFFECT THE PROPERTIES OF THE BASIC ALLOY.
Claim 2
Dependent Claim
74 words
A METAL ALLOY COMPOSED OF, BY WEIGHT, FROM ABOUT 15 TO ABOUT 30 PERCENT OF CHROMIUM, FROM ABOUT 5 TO ABOUT 15 PERCENT OF TUNGSTEN, FROM ABOUT 0.5 TO ABOUT 20 PERCENT OF TANTALUM, FROM ABOUT 0.01 TO ABOUT 3 PERCENT OF ZIRCONIUM, FROM ABOUT 0.1 TO ABOUT 1.3 PERCENT OF CARBON, AND THE BALANCE COBALT EXCEPT FOR IMPURITIES AND MINOR ALLOYING CONSTITUENTS WHICH DO NOT SUBSTANTIALLY AFFECT THE PROPERTIES OF THE BASIC ALLOY.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-03-06 | 1964-09-05 | 1965-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-03-06 | 1968-09-05 | 1969-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-03-06 | 1972-09-05 | 1973-03-07 | $7700.00 | Window Closed / Lapsed |