US2727296A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Means for preventing aging effects in piezoelectric crystals
Assignee: Collins Radio Co
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Filing: 1953-05-28
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Granted: 1955-12-20
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Expires: 1973-05-28
Abstract
No abstract record available.
Inventors
- 👤 Robert L Craiglow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 23:18
CPC Classifications
H; H03; H03H; H03H9/00; H03H9/02; H03H9/05; H03H9/10; H03H9/1007; H03H9/1014; Y; Y10; Y10T; Y10T29/00; Y10T29/42
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
85 words
A METHOD OF PREVENTING AGING EFFECTS IN A PLATED PIEZOELECTRIC CRYSTAL MOUNTED IN AN EVACUATED CONTAINER COMPRISING, PLATING SUBSTANTIALLY THE ENTIRE INNER SURFACE OF THE CONTAINER WITH THE SAME METALLIC MATERIAL WHICH PLATES SAID CRYSTAL, MOUNTING CRYSTAL WHICH HAS SURFACES PLATED WITH SAID METALLIC MATERIAL IN SAID CONTAINER, EVACUATING SAID CONTAINER AFTER THE STEPS OF PLATING THE CONTAINER AND MOUNTING THE CRYSTAL, AND SEALING SAID CONTAINER SO THAT THE VAPOR PRODUCED BY SUBLIMATION OF SAID METALLIC MATERIAL OCCURS MAINLY FROM THE PLATING ON SAID CONTAINER.
Claim 2
Independent Claim
85 words
A METHOD OF PREVENTING AGING EFFECTS IN A PLATED PIEZOELECTRIC CRYSTAL MOUNTED IN AN EVACUATED CONTAINER COMPRISING, PLATING SUBSTANTIALLY THE ENTIRE INNER SURFACE OF THE CONTAINER WITH THE SAME METALLIC MATERIAL WHICH PLATES SAID CRYSTAL, MOUNTING CRYSTAL WHICH HAS SURFACES PLATED WITH SAID METALLIC MATERIAL IN SAID CONTAINER, EVACUATING SAID CONTAINER AFTER THE STEPS OF PLATING THE CONTAINER AND MOUNTING THE CRYSTAL, AND SEALING SAID CONTAINER SO THAT THE VAPOR PRODUCED BY SUBLIMATION OF SAID METALLIC MATERIAL OCCURS MAINLY FROM THE PLATING ON SAID CONTAINER.
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) | 1958-12-19 | 1959-06-20 | 1959-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-12-19 | 1963-06-20 | 1963-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-12-19 | 1967-06-20 | 1967-12-20 | $7700.00 | Window Closed / Lapsed |