US3012883A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Niobium base alloy
Assignee: National Research Corp
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Filing: 1959-07-09
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Granted: 1961-12-12
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Expires: 1979-07-09
Abstract
No abstract record available.
Inventors
- 👤 Lloyd R Allen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:19
CPC Classifications
C; C22; C22C; C22C27/00; C22C27/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
38 words
AN IMPROVED HIGH TEMPERATURE SERVICE NIOBIUM BASE AND ALLOY COMPRISING BY WEIGHT APPROXIMATELY OF 12% VANADIUM, 2% ZIRCONIUM, 0.5% IRON, THE SUM TOTAL OF C. O AND N RANGING FROM 0.1 TO 0.2%, THE BALANCE BEING ESSENTIALLY NIOBIUM.
Claim 2
Dependent Claim
38 words
AN IMPROVED HIGH TEMPERATURE SERVICE NIOBIUM BASE AND ALLOY COMPRISING BY WEIGHT APPROXIMATELY OF 12% VANADIUM, 2% ZIRCONIUM, 0.5% IRON, THE SUM TOTAL OF C. O AND N RANGING FROM 0.1 TO 0.2%, THE BALANCE BEING ESSENTIALLY NIOBIUM.
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) | 1964-12-11 | 1965-06-12 | 1965-12-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-12-11 | 1969-06-12 | 1969-12-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-12-11 | 1973-06-12 | 1973-12-12 | $7700.00 | Window Closed / Lapsed |