Patent US5431668A successfully refreshed from Google Patents.
US3585418A
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Piezoelectric resonators and method of tuning the same
Assignee: Clevite Corp
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Filing: 1969-07-22
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Granted: 1971-06-15
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Expires: 1989-07-22
Abstract
Abstract There is disclosed a high frequency piezoelectric resonator having an electroded region and a surrounding nonelectroded region, said resonator having means for suppressing spurious responses comprising a layer of nonabsorbent, insulating and high Q material, said layer being deposited on said nonelectroded region in a collarlike configuration. Also, said layer has been shown to serve as an effective means for fine-tuning piezoelectric resonators.
Inventors
- 👤 Donald J Koneval
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:42
CPC Classifications
H; H03; H03H; H03H3/00; H03H3/007; H03H3/02; H03H3/04; H03H9/00; H03H9/15; H03H9/17; H03H9/19; H03H2003/0414
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
30 words
A high frequency piezoelectric resonator as described in claim 1 wherein said layer comprises a vapor-deposited member of the group consisting essentially of silicon monoxide, silicon dioxide, and silicon sesquioxide.
Claim 2
Dependent Claim
72 words
In a high frequency piezoelectric resonator comprising an electroded region having a frequency fa and a nonelectroded region having a frequency fb, said frequencies fa and fb being in the range of 0.80000 to 0.99999, a means foR suppressing spurious responses comprising in combination to a collarlike layer of high Q, nonabsorbent and insulating material, being deposited on at least a portion of said nonelectroded region, and substantially surrounding said electroded region.
Claim 3
Dependent Claim
63 words
A high frequency piezoelectric resonator comprising a quartz wafer having an electroded region having a resonant frequency fa and a nonelectroded region having a frequency fb, said frequencies fa and fb being related whereby fa/fb being in the range of 0.80000 to 0.99999, and an elevated collarlike edge region tapering upwardly from said nonelectroded region to effectively suppress spurious responses of the resonator.
References Cited (Backward Citations)
US3365591A
Cited
US2159891A
Cited
US2486968A
Cited
US2486916A
Cited
US2956184A
Cited
US3401276A
Cited
US3401283A
Cited
US3382381A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-06-14 | 1974-12-14 | 1975-06-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-14 | 1978-12-14 | 1979-06-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-14 | 1982-12-14 | 1983-06-15 | $7700.00 | Window Closed / Lapsed |