US3217281A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical resistor
Assignee: Corning Glass Works
•
Filing: 1962-05-28
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Granted: 1965-11-09
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Expires: 1982-05-28
Abstract
No abstract record available.
Inventors
- 👤 Edward M Griest
- 👤 Walter H Tarcza
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 10:07
CPC Classifications
H; H01; H01C; H01C7/00; H01C7/18; H01B; H01B1/00; H01C1/00; H01C1/02; H01C1/032
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
86 words
AN ELECTRICAL RESISTOR COMPRISING: A FIRST METAL OXIDE FILM WHICH IS ELECTROCONDUCTIVE AND IS THE PRIMARY CONDUCTING ELEMENT OF THE RESISTOR, A SECOND METAL OXIDE FILM OF SUBSTANTIALLY HOMOGENEOUS COMPOSITION, ON WHICH SAID FIRST METAL OXIDE FILM IS DIRECTLY DEPOSITED AND WHICH (1) CONSISTS ESSENTIALLY OF ANTIMONY OXIDE AND TIN OXIDE, AND (2) HAS RELATIVELY LOW CONDUCTIVITY WITH RESPECT TO SAID FIRST FILM, A CERAMIC SUBSTRATE WHICH SERVES AS A SUPPORT FOR SAID SECOND FILM, AND SPACED TERMINAL MEMBERS IN ELECTRICAL CONTACT WITH SAID FIRST FILM.
Claim 2
Dependent Claim
86 words
AN ELECTRICAL RESISTOR COMPRISING: A FIRST METAL OXIDE FILM WHICH IS ELECTROCONDUCTIVE AND IS THE PRIMARY CONDUCTING ELEMENT OF THE RESISTOR, A SECOND METAL OXIDE FILM OF SUBSTANTIALLY HOMOGENEOUS COMPOSITION, ON WHICH SAID FIRST METAL OXIDE FILM IS DIRECTLY DEPOSITED AND WHICH (1) CONSISTS ESSENTIALLY OF ANTIMONY OXIDE AND TIN OXIDE, AND (2) HAS RELATIVELY LOW CONDUCTIVITY WITH RESPECT TO SAID FIRST FILM, A CERAMIC SUBSTRATE WHICH SERVES AS A SUPPORT FOR SAID SECOND FILM, AND SPACED TERMINAL MEMBERS IN ELECTRICAL CONTACT WITH SAID FIRST FILM.
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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) | 1968-11-08 | 1969-05-10 | 1969-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-08 | 1973-05-10 | 1973-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-08 | 1977-05-10 | 1977-11-09 | $7700.00 | Window Closed / Lapsed |