US3205465A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermistor assembly
Assignee: Unifrax I LLC
•
Filing: 1960-09-26
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Granted: 1965-09-07
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Expires: 1980-09-26
Abstract
No abstract record available.
Inventors
- 👤 Wingate A Lambertson
- 👤 Paul E Carroll
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 02:18
CPC Classifications
H; H01; H01C; H01C7/00; H01C7/04; B; B22; B22C; B22C15/00; B22C15/10; B22C15/12; H01B; H01B1/00; H01B1/04; H01C1/00; H01C1/14; H01C1/1413; Y; Y10; Y10S; Y10S438/00; Y10S438/931
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
88 words
A THERMISTOR ASSEMBLY, COMPRISING A SINGLE CRYSTAL OF A SILICON CARBIDE SELECTED FROM THE GROUP CONSISTING OF PURE SILICON CARBIDE AND SILICON CARBIDE MODIFIED BY THE PRESENCE THROUGHOUT THE BODY THEREOF OF AT LEAST ONE ELEMENT SELECTED FROM GROUPS IIIA AND VA OF THE PERIODIC CHART, SAID ELEMENT BEING PRESENT IN AN AMOUNT RANGING FROM A TRACE AMOUNT UP TO ABOUT 5% BY WEIGHT OF SAID CRYSTAL, AND ELECTRICAL LEADS MADE OF SUBSTANTIALLY PURE TUNGSTEN AND JOINED BY HIGH TEMPERATURE FUSION DIRECTLY TO ISOLATED POINTS OF SAID CRYSTAL.
Claim 2
Dependent Claim
88 words
A THERMISTOR ASSEMBLY, COMPRISING A SINGLE CRYSTAL OF A SILICON CARBIDE SELECTED FROM THE GROUP CONSISTING OF PURE SILICON CARBIDE AND SILICON CARBIDE MODIFIED BY THE PRESENCE THROUGHOUT THE BODY THEREOF OF AT LEAST ONE ELEMENT SELECTED FROM GROUPS IIIA AND VA OF THE PERIODIC CHART, SAID ELEMENT BEING PRESENT IN AN AMOUNT RANGING FROM A TRACE AMOUNT UP TO ABOUT 5% BY WEIGHT OF SAID CRYSTAL, AND ELECTRICAL LEADS MADE OF SUBSTANTIALLY PURE TUNGSTEN AND JOINED BY HIGH TEMPERATURE FUSION DIRECTLY TO ISOLATED POINTS OF SAID CRYSTAL.
References Cited (Backward Citations)
US1023485A
Cited
US1060989A
Cited
US1787749A
Cited
US2273704A
Cited
US2854364A
Cited
US2916460A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-09-06 | 1969-03-08 | 1969-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-06 | 1973-03-08 | 1973-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-06 | 1977-03-08 | 1977-09-07 | $7700.00 | Window Closed / Lapsed |