Patent US3823424A successfully refreshed from Google Patents.
US2806961A
Expired / Lapsed
US
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Crystals with small apertures
Assignee: General Electric Co
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Filing: 1952-01-10
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Granted: 1957-09-17
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Expires: 1972-01-10
Abstract
No abstract record available.
Inventors
- 👤 Fordyce H Horn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:41
CPC Classifications
H; H10; H10P; H10P95/00; H10N; H10N30/00; H10N30/80; H10N30/85; H10N30/853; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2982; Y10T428/2991; Y10T428/2993
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
73 words
AN ARTICLE OF MANUFACTURE COMPRISING A SINGLE CRYSTAL INCLUDING A SCREW DISLOCATION THEREIN, IN WHICH THE PORTION ALONG THE AXIS OF DISLOCATION IS PREFERENTIALLY SUBJECT TO DISSOLUTION BY CHEMICAL ACTION, AND HAVING A SMALL AXIAL SYMMETRICAL APERTURE THE ORDER OF ONE TO SEVERAL HUNDRED MICRONS IN DIAMETER ALONG SAID AXIS OF DISLOCATION, SAID APERTURE BEING FORMED BY CHEMICAL DISSOLUTION, AND A PROTECTIVE METALLIC COATING ON SAID CRYSTAL IN THE VICINITY OF SAID APERTURE.
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) | 1960-09-16 | 1961-03-18 | 1961-09-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-09-16 | 1965-03-18 | 1965-09-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-09-16 | 1969-03-18 | 1969-09-17 | $7700.00 | Window Closed / Lapsed |