US3271631A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Uniaxial crystal signal device
Assignee: International Business Machines Corp
•
Filing: 1962-05-08
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Granted: 1966-09-06
•
Expires: 1982-05-08
Abstract
No abstract record available.
Inventors
- 👤 John C Marinace
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 23:03
CPC Classifications
H; H01; H01S; H01S3/00; H01S3/05; H01S3/06; H01S3/063; H01S3/067; H10; H10P; H10P95/00; H01S3/08; H01S3/081; H01S3/083
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
73 words
A SEMICONDUCTOR DEVICE COMPRISING: (A) A TOROIDAL SEMICONDUCTOR ELEMENT COMPRISING A SEMICONDUCTOR CRYSTAL WHISKER SHAPED IN TOROIDAL FORM AND EPITAXIALLY JOINED AT ITS ENDS; (B) SAID WHISKER HAVING A SINGLE CRYSTALLINE AXIS FOLLOWING THE CURVATURE OF SAID TOROID; (C) SAID ELEMENT INCLUDING A CENTRAL CORE PORTION OF A FIRST CONDUCTIVITY TYPE AND AN OUTER SKIN PORTION OF A SECOND CONDUCTIVITY TYPE JOINED TOGETHER AT A FIRST SEMICONDUCTOR JUNCTION SURROUNDING SAID CENTRAL CORE PORTION;
Claim 2
Dependent Claim
73 words
A SEMICONDUCTOR DEVICE COMPRISING: (A) A TOROIDAL SEMICONDUCTOR ELEMENT COMPRISING A SEMICONDUCTOR CRYSTAL WHISKER SHAPED IN TOROIDAL FORM AND EPITAXIALLY JOINED AT ITS ENDS; (B) SAID WHISKER HAVING A SINGLE CRYSTALLINE AXIS FOLLOWING THE CURVATURE OF SAID TOROID; (C) SAID ELEMENT INCLUDING A CENTRAL CORE PORTION OF A FIRST CONDUCTIVITY TYPE AND AN OUTER SKIN PORTION OF A SECOND CONDUCTIVITY TYPE JOINED TOGETHER AT A FIRST SEMICONDUCTOR JUNCTION SURROUNDING SAID CENTRAL CORE PORTION;
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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) | 1969-09-05 | 1970-03-07 | 1970-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-05 | 1974-03-07 | 1974-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-05 | 1978-03-07 | 1978-09-06 | $7700.00 | Window Closed / Lapsed |