US3328209A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Noble metal thermocouple having base metal compensating leads
Assignee: Engelhard Industries Inc
•
Filing: 1963-01-07
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Granted: 1967-06-27
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Expires: 1983-01-07
Abstract
No abstract record available.
Inventors
- 👤 Julius F Schneider
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 11:06
CPC Classifications
H; H10; H10N; H10N10/00; H10N10/80; H10N10/85; H10N10/851; H10N10/854
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
73 words
A THERMOCOUPLE COMPRSING A NEGATIVE LEG WIRE COMPOSED OF 25 TO 40% GOLD, 50 TO 70% PALLADIUM, AND O TO 15% PLATINUM BY WEIGHT AND A POSITIVE LEG WIRE COMPOSED OF 0 TO 70% PALLADIUM, 25 TO 90% PLATINUM, AND 2 TO 15% RHODIUM BY WEIGHT, HAVING CONNECTED TO SAID NEGATIVE LEG A LEAD WIRE COMPOSED OF 78.5 TO 98,5% NICKEL, 1 TO 5% ALUMINUM, 0.5 TO 1.5% SILICON, AND 0 TO 15%
Claim 2
Dependent Claim
73 words
A THERMOCOUPLE COMPRSING A NEGATIVE LEG WIRE COMPOSED OF 25 TO 40% GOLD, 50 TO 70% PALLADIUM, AND O TO 15% PLATINUM BY WEIGHT AND A POSITIVE LEG WIRE COMPOSED OF 0 TO 70% PALLADIUM, 25 TO 90% PLATINUM, AND 2 TO 15% RHODIUM BY WEIGHT, HAVING CONNECTED TO SAID NEGATIVE LEG A LEAD WIRE COMPOSED OF 78.5 TO 98,5% NICKEL, 1 TO 5% ALUMINUM, 0.5 TO 1.5% SILICON, AND 0 TO 15%
References Cited (Backward Citations)
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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) | 1970-06-26 | 1970-12-26 | 1971-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-06-26 | 1974-12-26 | 1975-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-06-26 | 1978-12-26 | 1979-06-27 | $7700.00 | Window Closed / Lapsed |