Patent US3343368A successfully refreshed from Google Patents.
US2795680A
Expired / Lapsed
US
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Printed resistors and inks
Assignee: Sprague Electric Co
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Filing: 1952-05-16
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Granted: 1957-06-11
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Expires: 1972-05-16
Abstract
No abstract record available.
Inventors
- 👤 David B Peck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:41
CPC Classifications
H; H01; H01C; H01C17/00; H01C17/06; H01C17/065; H01C17/06506; H01C17/06573; H01C17/06586; C; C08; C08K; C08K3/00; C08K3/02; C08K3/04; C08K3/08; C08L; C08L63/00; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24802; Y10T428/24893; Y10T428/24926
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
63 words
A PRINTED RESISTOR COMPRISING A CERAMIC BASE, AN ADHERENT LAYER OF RESISTANCE MATERIAL CONSISTING OF FROM ABOUT 50% TO ABOUT 95% OF CROSS-LINKED EPOXY RESIN, FROM ABOUT 50% TO ABOUT 5% OF FINELY DIVIDED CONDUCTING PARTICLES AND FROM ABOUT 25% TO ABOUT 0% OF FINELY DIVIDED NON-CONDUCTING PARTICLES DEPOSITED UPON SAID BASE, AND TERMINAL CONTACT AREAS PROVIDED AT SPACED PORTIONS OF SAID LAYER.
Claim 2
Dependent Claim
63 words
A PRINTED RESISTOR COMPRISING A CERAMIC BASE, AN ADHERENT LAYER OF RESISTANCE MATERIAL CONSISTING OF FROM ABOUT 50% TO ABOUT 95% OF CROSS-LINKED EPOXY RESIN, FROM ABOUT 50% TO ABOUT 5% OF FINELY DIVIDED CONDUCTING PARTICLES AND FROM ABOUT 25% TO ABOUT 0% OF FINELY DIVIDED NON-CONDUCTING PARTICLES DEPOSITED UPON SAID BASE, AND TERMINAL CONTACT AREAS PROVIDED AT SPACED PORTIONS OF SAID LAYER.
References Cited (Backward Citations)
US1985166A
Cited
US2120930A
Cited
US2258218A
Cited
US2437708A
Cited
US2528360A
Cited
US2500600A
Cited
US2500449A
Cited
US2692321A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-06-10 | 1960-12-10 | 1961-06-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-06-10 | 1964-12-10 | 1965-06-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-06-10 | 1968-12-10 | 1969-06-11 | $7700.00 | Window Closed / Lapsed |