US2867780A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ceramic barium titanate electromechanical filter
Assignee: Individual
•
Filing: 1956-10-29
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Granted: 1959-01-06
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Expires: 1976-10-29
Abstract
No abstract record available.
Inventors
- 👤 David S Potter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 00:29
CPC Classifications
H; H03; H03H; H03H9/00; H03H9/46
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
101 words
AN ELECTRICAL FILTER WHICH SHOWS RESONANCES FOR NUMEROUS MODES COMPRISING A PLURALITY OF COOPERATING ELECTRICALLY POLARIZED BARIUM TITANATE DISCS, MEANS FOR MOUNTING SAID DISCS ADJACENT EACH OTHER IN AXIAL ALIGNMENT WITH EACH OTHER AND HAVING THEIR OPPOSED FACES IN CLOSE ENGAGEMENT, A HIGHLY CONDUCTIVE METALLIC COATING ON EACH OF THE OPPOSED FACES OF SAID DISCS, SAID MOUNTING MEANS CONSISTING OF A NON-CONDUCTIVE U-SHAPED CLAMP HAVING SCREW ADJUSTING MEANS IN EACH ARM OF SAID CLAMP FOR VARYING THE TIGHTNESS OF ENGAGEMENT OF SAID OPPOSED FACES FOR VARYING THE PASS-BAND WIDTH OF THE FILTER, AND ELECTRICAL INPUT AND OUTPUT CONNECTIONS FOR SAID DISCS.
Claim 2
Dependent Claim
101 words
AN ELECTRICAL FILTER WHICH SHOWS RESONANCES FOR NUMEROUS MODES COMPRISING A PLURALITY OF COOPERATING ELECTRICALLY POLARIZED BARIUM TITANATE DISCS, MEANS FOR MOUNTING SAID DISCS ADJACENT EACH OTHER IN AXIAL ALIGNMENT WITH EACH OTHER AND HAVING THEIR OPPOSED FACES IN CLOSE ENGAGEMENT, A HIGHLY CONDUCTIVE METALLIC COATING ON EACH OF THE OPPOSED FACES OF SAID DISCS, SAID MOUNTING MEANS CONSISTING OF A NON-CONDUCTIVE U-SHAPED CLAMP HAVING SCREW ADJUSTING MEANS IN EACH ARM OF SAID CLAMP FOR VARYING THE TIGHTNESS OF ENGAGEMENT OF SAID OPPOSED FACES FOR VARYING THE PASS-BAND WIDTH OF THE FILTER, AND ELECTRICAL INPUT AND OUTPUT CONNECTIONS FOR SAID DISCS.
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) | 1962-01-05 | 1962-07-07 | 1963-01-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-01-05 | 1966-07-07 | 1967-01-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-01-05 | 1970-07-07 | 1971-01-06 | $7700.00 | Window Closed / Lapsed |