US3243671A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ceramic capacitor
Assignee: Sprague Electric Co
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Filing: 1965-01-22
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Granted: 1966-03-29
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Expires: 1985-01-22
Abstract
No abstract record available.
Inventors
- 👤 Jr John B Heron
- 👤 John H Fabricius
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 14:01
CPC Classifications
H; H01; H01G; H01G4/00; H01G4/35
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
116 words
A CERAMIC FEED-THUR CAPACITOR COMPRISING A CERAMIC DISC HAVING A CENTRAL APERTURE; A FEED-THRU ELECTRODE AND A COUNTERELECTRODE IN CAPACITIVE ARRANGEMENT ON OPPOSITE SIDES OF SAID DISC, A FEED-THUR LEAD FIXED TO SAID FEED-THRU ELECTRODE EXTENDING THROUGH SAID CENTRAL APERTURE; A LAYER OF GLAZE MATERIAL EXTENDING OVER PART OF EACH ELECTRODE, ONE GLASE LAYER INSULATING SAID FEED-THRU LEAD FROM SAID COUNTERELECTRODE, THE OTHER LAYER INSULATING THE FEED-THRU ELECTRODE FROM THE COUNTERELECTRODE; A HEAT STABLE INSULATING TUBE POSITIONED ON SAID CERAMIC DISC BETWEEN THE PERIPHERY THEREOF AND THE PERIPHERY OF THE FEED-THRU ELECTRODE; SAID CAPACITOR AND INSULATING TUBE BEING HERMETICALLY SEALED WITHIN A METAL CASE, THE FEED-THRU LEAD EXTENDING OUT EACH END OF THE HERMETICALLY SEALED CASE.
Claim 2
Dependent Claim
116 words
A CERAMIC FEED-THUR CAPACITOR COMPRISING A CERAMIC DISC HAVING A CENTRAL APERTURE; A FEED-THRU ELECTRODE AND A COUNTERELECTRODE IN CAPACITIVE ARRANGEMENT ON OPPOSITE SIDES OF SAID DISC, A FEED-THUR LEAD FIXED TO SAID FEED-THRU ELECTRODE EXTENDING THROUGH SAID CENTRAL APERTURE; A LAYER OF GLAZE MATERIAL EXTENDING OVER PART OF EACH ELECTRODE, ONE GLASE LAYER INSULATING SAID FEED-THRU LEAD FROM SAID COUNTERELECTRODE, THE OTHER LAYER INSULATING THE FEED-THRU ELECTRODE FROM THE COUNTERELECTRODE; A HEAT STABLE INSULATING TUBE POSITIONED ON SAID CERAMIC DISC BETWEEN THE PERIPHERY THEREOF AND THE PERIPHERY OF THE FEED-THRU ELECTRODE; SAID CAPACITOR AND INSULATING TUBE BEING HERMETICALLY SEALED WITHIN A METAL CASE, THE FEED-THRU LEAD EXTENDING OUT EACH END OF THE HERMETICALLY SEALED CASE.
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) | 1969-03-28 | 1969-09-27 | 1970-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-28 | 1973-09-27 | 1974-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-28 | 1977-09-27 | 1978-03-29 | $7700.00 | Window Closed / Lapsed |