US4112134A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vacuum deposition method for frequency adjustment of piezoelectric resonators
Assignee: Transat Corp
•
Filing: 1976-03-22
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Granted: 1978-09-05
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Expires: 1996-03-22
Abstract
Abstract Vacuum deposition method for adjusting the resonant frequency of piezoelectric resonators wherein the speed and accuracy of the process are enhanced by abrupt termination of the deposition through injection of a gas into the vacuum chamber at the end of the adjustment cycle.
Inventors
- 👤 Gabriel Ralph Buynak
- 👤 Franz Ludwig Sauerland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 07:33
CPC Classifications
C; C23; C23C; C23C14/00; C23C14/22; C23C14/54; C23C14/24; H; H03; H03H; H03H3/00; H03H3/007; H03H3/02; H03H3/04; Y; Y10; Y10T; Y10T29/00; Y10T29/42
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
69 words
Method for adjusting the resonant frequency FR of a piezo-electric resonator to a target frequency FT comprising: (a) vapor depositing a material in a vacuum chamber for changing said resonant frequency of said resonator; (b) monitoring said resonant frequency during the deposition process; (c) continuing the deposition until |FR - FT| equals a predetermined value and then injecting an inert gas into the vacuum chamber to terminate the deposition.
Claim 2
Dependent Claim
69 words
Method for adjusting the resonant frequency FR of a piezo-electric resonator to a target frequency FT comprising: (a) vapor depositing a material in a vacuum chamber for changing said resonant frequency of said resonator; (b) monitoring said resonant frequency during the deposition process; (c) continuing the deposition until |FR - FT| equals a predetermined value and then injecting an inert gas into the vacuum chamber to terminate the deposition.
Claim 3
Dependent Claim
27 words
Method according to claim 1 where said gas is injected through an orifice located in the area between the source of the deposition vapor and the resonator.
References Cited (Backward Citations)
US2123227A
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US2978364A
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US3486217A
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US3400014A
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US3549414A
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US3383238A
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US3498818A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-09-04 | 1982-03-06 | 1982-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-09-04 | 1986-03-06 | 1986-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-09-04 | 1990-03-06 | 1990-09-05 | $7700.00 | Window Closed / Lapsed |