US3241092A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hybrid ceramic filters having two-terminal piezoelectric resonator in shunt with three-terminal piezoelectric resonator to improve harmonic rejection
Assignee: Murata Manufacturing Co Ltd
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Filing: 1964-04-10
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Granted: 1966-03-15
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Expires: 1984-04-10
Abstract
No abstract record available.
Inventors
- 👤 Toyoshima Isao
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:50
CPC Classifications
H; H03; H03H; H03H9/00; H03H9/46; H03H9/54; H03H9/545
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
61 words
HYBRID CERAMIC FILTERS COMPRISING IN A TRANSISTORIZED AMPLIFICATION CIRCUIT WHEREIN A SPLIT-ELECTRODE TYPE CREAMIC FILTER IS USED AS AN INTERSTAGE CONNECTOR, WITH TWO-TERMINAL CERAMIC FILTER CONNECTED IN PARALLEL TO THE CONNECTOR AT THE INPUT SIDE, WITH ITS ANTIRESONANCE FREQUENCY BEING SO REGULATED AS TO SUBSTANTIALLY COINCIDE TO THE RESONANCE FREQUENCY OF THE CONNECTOR, THEREBY TO IMPROVE THE HIGHER HARMONIC SPURIOUS CHARACTERISTIC.
Claim 2
Dependent Claim
61 words
HYBRID CERAMIC FILTERS COMPRISING IN A TRANSISTORIZED AMPLIFICATION CIRCUIT WHEREIN A SPLIT-ELECTRODE TYPE CREAMIC FILTER IS USED AS AN INTERSTAGE CONNECTOR, WITH TWO-TERMINAL CERAMIC FILTER CONNECTED IN PARALLEL TO THE CONNECTOR AT THE INPUT SIDE, WITH ITS ANTIRESONANCE FREQUENCY BEING SO REGULATED AS TO SUBSTANTIALLY COINCIDE TO THE RESONANCE FREQUENCY OF THE CONNECTOR, THEREBY TO IMPROVE THE HIGHER HARMONIC SPURIOUS CHARACTERISTIC.
References Cited (Backward Citations)
US3174122A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-03-14 | 1969-09-13 | 1970-03-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-14 | 1973-09-13 | 1974-03-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-14 | 1977-09-13 | 1978-03-15 | $7700.00 | Window Closed / Lapsed |