US2747992A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermo-electric nickel-base alloys
Assignee: Kanthal AB
•
Filing: 1951-12-08
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Granted: 1956-05-29
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Expires: 1971-12-08
Abstract
No abstract record available.
Inventors
- 👤 Hildebrand Gosta Er Hildebrand
- 👤 Edwin Bjorn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 15:45
CPC Classifications
C; C22; C22C; C22C19/00; C22C19/007; B; B32; B32B; B32B15/00; B32B15/01; H; H10; H10N; H10N10/00; H10N10/80; H10N10/85; H10N10/851; H10N10/8556
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
66 words
A NEGATIVE THERMO-ELECTRIC NICKEL BASE ALLOY COMPRISING 1.5 TO 3% OF SILICON AND 0.01 TO 1.5% OF AN AUXILIARY METAL FOR INFLUENCING THE THERMO-ELECTRIC FORCE OF THE ALLOY, SAID AUXILIARY METAL BEING A METAL WHICH WILL CAUSE A MAXIMUM CHANGE OF 0.4 MILLIVOLT IN THE THERMO-ELECTRIC FORCE AGAINST PLATINUM WHEN THE CONTENT OF SAID METAL IN SAID ALLOY IS CHANGED BY 0.01%, THE BALANCE BEING NICKEL.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-05-29 | 1959-11-28 | 1960-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-05-29 | 1963-11-28 | 1964-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-05-29 | 1967-11-28 | 1968-05-29 | $7700.00 | Window Closed / Lapsed |