US3314784A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cobalt-base alloy resistant to thermal shock
Assignee: Union Carbide Corp
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Filing: 1963-11-21
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Granted: 1967-04-18
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Expires: 1983-11-21
Abstract
No abstract record available.
Inventors
- 👤 Robert D Mcquillan
- 👤 William M Thomas
- 👤 Elmer L Frey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:15
CPC Classifications
C; C22; C22C; C22C19/00; C22C19/07
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
116 words
A THERMAL-SHOCK RESISTANT COBALT BASE ALLOY CONSISTING ESSENTIALLY OF 20 TO 35 PERCENT CHROMIUM, 5 TO 20 PERCENT TUNGSTEN, 3 TO 5.5 PERCENT TANTALUM, 0.7TO 1.3 PERCENT CARBON, A MAXIMUM OF 0.08 PERCENT TITANIUM, A MAXIMUM OF 0.01 PERCENT ZIRCONIUM, LESS THAN 1% COLUMBIUM, BALL ANCE COBALT AND INCIDENTAL IMPURITIES, THE TOTAL CHROMIUM PLUS TUNGSTEN CONTENT OF SAID ALLOY BEING GREATER THAN ABOUT 35 PERCENT AND NOT EXCEEDING ABOUT 47.5 PERCENT; THE TUNGSTEN CONTENT BEING GREATER THAN ABOUT TWO TIMES THE TANTALUM CONTENT, THE TOTAL CHROMIUM AND CONTENT BEING BETWEEN 8 AND 12 TIMES THE TANTALUM CONTENT, AND THE TANTALUM BEING PRESENT IN AN AMOUNT LESS THAN THE TUNGSTEN CONTENT AND LESS THAN THE CHROMIUM CONTENT.
Claim 2
Dependent Claim
116 words
A THERMAL-SHOCK RESISTANT COBALT BASE ALLOY CONSISTING ESSENTIALLY OF 20 TO 35 PERCENT CHROMIUM, 5 TO 20 PERCENT TUNGSTEN, 3 TO 5.5 PERCENT TANTALUM, 0.7TO 1.3 PERCENT CARBON, A MAXIMUM OF 0.08 PERCENT TITANIUM, A MAXIMUM OF 0.01 PERCENT ZIRCONIUM, LESS THAN 1% COLUMBIUM, BALL ANCE COBALT AND INCIDENTAL IMPURITIES, THE TOTAL CHROMIUM PLUS TUNGSTEN CONTENT OF SAID ALLOY BEING GREATER THAN ABOUT 35 PERCENT AND NOT EXCEEDING ABOUT 47.5 PERCENT; THE TUNGSTEN CONTENT BEING GREATER THAN ABOUT TWO TIMES THE TANTALUM CONTENT, THE TOTAL CHROMIUM AND CONTENT BEING BETWEEN 8 AND 12 TIMES THE TANTALUM CONTENT, AND THE TANTALUM BEING PRESENT IN AN AMOUNT LESS THAN THE TUNGSTEN CONTENT AND LESS THAN THE CHROMIUM CONTENT.
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) | 1970-04-17 | 1970-10-17 | 1971-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-04-17 | 1974-10-17 | 1975-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-04-17 | 1978-10-17 | 1979-04-18 | $7700.00 | Window Closed / Lapsed |