US3293440A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Grain boundary photo-orienter with integral shields
Assignee: Northrop Grumman Guidance and Electronics Co Inc
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Filing: 1963-11-21
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Granted: 1966-12-20
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Expires: 1983-11-21
Abstract
No abstract record available.
Inventors
- 👤 Rolf K Mueller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:11
CPC Classifications
G; G01; G01S; G01S3/00; G01S3/78; G01S3/782; G01S3/783; H; H10; H10F; H10F99/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
63 words
A PHOTOSENSITIVE SEMICONDUCTOR DEVICE, WHICH COMPRISES: A SEMICONDUCTOR BODY OF A SINGLE SEMICONDUCTOR TYPE AND HAVING A SUBSTANTIALLY PLANAR TOP SURFACE AND A PLURALITY OF INTERSECTING GRAIN BOUNDARIES WHICH EXTEND FROM SAID TOP SURFACE THROUGH SAID BODY, SAID TOP SURFACE BEING PROVIDED WITH AN INTEGRAL RIDGE CENTERED ON EACH OF SAID GRAIN BOUNDARIES SO THAT EACH SAID GRAIN BOUNDARY BISECTS EACH SAID RIDGE.
Claim 2
Dependent Claim
63 words
A PHOTOSENSITIVE SEMICONDUCTOR DEVICE, WHICH COMPRISES: A SEMICONDUCTOR BODY OF A SINGLE SEMICONDUCTOR TYPE AND HAVING A SUBSTANTIALLY PLANAR TOP SURFACE AND A PLURALITY OF INTERSECTING GRAIN BOUNDARIES WHICH EXTEND FROM SAID TOP SURFACE THROUGH SAID BODY, SAID TOP SURFACE BEING PROVIDED WITH AN INTEGRAL RIDGE CENTERED ON EACH OF SAID GRAIN BOUNDARIES SO THAT EACH SAID GRAIN BOUNDARY BISECTS EACH SAID RIDGE.
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) | 1969-12-19 | 1970-06-20 | 1970-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-19 | 1974-06-20 | 1974-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-19 | 1978-06-20 | 1978-12-20 | $7700.00 | Window Closed / Lapsed |