US3372062A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Noble metal thermocouple having base metal leads
Assignee: Engelhard Industries Inc
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Filing: 1964-06-22
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Granted: 1968-03-05
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Expires: 1984-06-22
Abstract
No abstract record available.
Inventors
- 👤 Edward D Zysk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:22
CPC Classifications
H; H10; H10N; H10N10/00; H10N10/80; H10N10/85; H10N10/851; H10N10/854
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
120 words
A THERMOCOUPLE COMPRISING A THERMOCOUPLE POSITIVE LEG WIRE COMPOSED OF 82.5-83.5% PALLADIUM, 13.5-14.3% PLATINUM AND 2.8-3.3% GOLD BY WEIGHT AND A THERMOCOUPLE NEGATIVE LEG WIRE COMPOSED OF 64.5-65.5% GOLD, 34.0-35.2% PALLADIUM AND 0-0.99% PLATINUM, SAID POSITIVE LEG WI-RE AND SAID NEGATIVE LEG WIRE BEING ELECTRICALLY JOINED TO FORM A HOT JUNCTION, A POSITIVE LEAD WIRE COMPOSED OF 97.4-98.8% COPPER, 0.7-1.5% NICKEL, 0.5-1.1% MANGANESE, AND 0-0.01% CARBON BY WEIGHT, SAID POSITIVE LEAD WIRE BEING JOINED TO SAID POSITIVE LEG WIRE TO FORM A TIE POINT, AND A NEGATIVE LEAD WIRE COMPOSED OF 45-60% COPPER, 40-55% NICKEL, 0-15% IRON, 0-1.4 MANGANESE AND 0-0.1% CARBON BY WEIGHT, SAID NEGATIVE LEAD WIRE BEING JOINED TO SAID NEGATIVE LEG WIRE TO FORM A TIE POINT.
Claim 2
Dependent Claim
120 words
A THERMOCOUPLE COMPRISING A THERMOCOUPLE POSITIVE LEG WIRE COMPOSED OF 82.5-83.5% PALLADIUM, 13.5-14.3% PLATINUM AND 2.8-3.3% GOLD BY WEIGHT AND A THERMOCOUPLE NEGATIVE LEG WIRE COMPOSED OF 64.5-65.5% GOLD, 34.0-35.2% PALLADIUM AND 0-0.99% PLATINUM, SAID POSITIVE LEG WI-RE AND SAID NEGATIVE LEG WIRE BEING ELECTRICALLY JOINED TO FORM A HOT JUNCTION, A POSITIVE LEAD WIRE COMPOSED OF 97.4-98.8% COPPER, 0.7-1.5% NICKEL, 0.5-1.1% MANGANESE, AND 0-0.01% CARBON BY WEIGHT, SAID POSITIVE LEAD WIRE BEING JOINED TO SAID POSITIVE LEG WIRE TO FORM A TIE POINT, AND A NEGATIVE LEAD WIRE COMPOSED OF 45-60% COPPER, 40-55% NICKEL, 0-15% IRON, 0-1.4 MANGANESE AND 0-0.1% CARBON BY WEIGHT, SAID NEGATIVE LEAD WIRE BEING JOINED TO SAID NEGATIVE LEG WIRE TO FORM A TIE POINT.
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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) | 1971-03-05 | 1971-09-04 | 1972-03-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-03-05 | 1975-09-04 | 1976-03-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-03-05 | 1979-09-04 | 1980-03-05 | $7700.00 | Window Closed / Lapsed |