US3851291A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thin film thermistor
Assignee: Ceramic Magnetics Inc
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Filing: 1974-01-17
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Granted: 1974-11-26
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Expires: 1994-01-17
Abstract
Abstract A thin film thermistor and a method of making such a thermistor in which a composition of lead teluride plus 5 percent cerium is sputtered on to a polymide film after which electrodes are deposited thereon with the width of lead teluride composition remaining uncovered being controlled to thereby control the thermistor characteristics.
Inventors
- 👤 A Sommer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:55
CPC Classifications
H; H01; H01C; H01C17/00; H01C17/06; H01C17/075; H01C17/12; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49082; Y10T29/49085; Y10T29/49099; Y10T29/49101
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
50 words
A THIN THERMISTOR COMPRISING; A. A THIN POLYMIDE FILM; B. A THERMISTOR MATERIAL CONSISTING OF LEAD TELLURIDE PLUS APPROXIMATELY 5 PERCENT CERIUM DEPOSITED ON A CENTRAL PORTION OF SAID FILM; AND C. A PAIR OF ELECTRODES DEPOSITED ON SAID FILM SO AS TO CONTACT SAID THERMISTOR MATERIAL AT TWO SIDES.
Claim 2
Dependent Claim
50 words
A THIN THERMISTOR COMPRISING; A. A THIN POLYMIDE FILM; B. A THERMISTOR MATERIAL CONSISTING OF LEAD TELLURIDE PLUS APPROXIMATELY 5 PERCENT CERIUM DEPOSITED ON A CENTRAL PORTION OF SAID FILM; AND C. A PAIR OF ELECTRODES DEPOSITED ON SAID FILM SO AS TO CONTACT SAID THERMISTOR MATERIAL AT TWO SIDES.
Claim 3
Dependent Claim
12 words
The invention according to claim 1 wherein said electrodes are gold electrodes.
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) | 1977-11-25 | 1978-05-27 | 1978-11-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-11-25 | 1982-05-27 | 1982-11-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-11-25 | 1986-05-27 | 1986-11-26 | $7700.00 | Window Closed / Lapsed |