Patent US3234440A successfully refreshed from Google Patents.
US3234440A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Semiconductor device fabrication
Assignee: International Business Machines Corp
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Filing: 1962-08-14
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Granted: 1966-02-08
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Expires: 1982-08-14
Abstract
No abstract record available.
Inventors
- 👤 John C Marinace
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:23
CPC Classifications
H; H10; H10D; H10D84/00; H10D84/01; H10D86/00; H10D86/01; H10P; H10P14/00; H10P14/20; H10P14/24; H10P14/29; H10P14/2901; H10P14/2902; H10P14/2905; H10P14/34; H10P14/3402; H10P14/3404; H10P14/3411; H10P95/00; Y; Y10; Y10S; Y10S257/00; Y10S257/926
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
80 words
A SEMICONDUCTOR DEVICE MATRIX COMPRISING A MONOCRYSTALLINE SEMICONDUCTOR ELEMENT HAVING AT LEAST ONE MAJOR SURFACE; A DEVICE-DEFINING INSULATING MASK IN CONTACT WITH SAID AT LEAST ONE MAJOR SURFACE; AT LEAST TWO SEMICONDUCTOR DEVICES COMPRISING SEMICONDUCTOR MATERIAL, FORMED WITHIN SAID APERTURES IN SAID DEVICE-DEFINING MASK SPATIALLY SEPARATED ON SAID MAJOR SURFACE, IN CONTACT WITH SAID ELEMENT TO DEFINE SEMICONDUCTOR JUNCTIONS RESPECTIVELY WITHIN SAID APERTURES ABOVE THE SURFACE OF SAID ELEMENT; AND AT LEAST ONE OHMIC CONTACT ON EACH SAID SEMICONDUCTOR DEVICE.
Claim 2
Dependent Claim
80 words
A SEMICONDUCTOR DEVICE MATRIX COMPRISING A MONOCRYSTALLINE SEMICONDUCTOR ELEMENT HAVING AT LEAST ONE MAJOR SURFACE; A DEVICE-DEFINING INSULATING MASK IN CONTACT WITH SAID AT LEAST ONE MAJOR SURFACE; AT LEAST TWO SEMICONDUCTOR DEVICES COMPRISING SEMICONDUCTOR MATERIAL, FORMED WITHIN SAID APERTURES IN SAID DEVICE-DEFINING MASK SPATIALLY SEPARATED ON SAID MAJOR SURFACE, IN CONTACT WITH SAID ELEMENT TO DEFINE SEMICONDUCTOR JUNCTIONS RESPECTIVELY WITHIN SAID APERTURES ABOVE THE SURFACE OF SAID ELEMENT; AND AT LEAST ONE OHMIC CONTACT ON EACH SAID SEMICONDUCTOR DEVICE.
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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) | 1969-02-07 | 1969-08-09 | 1970-02-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-07 | 1973-08-09 | 1974-02-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-07 | 1977-08-09 | 1978-02-08 | $7700.00 | Window Closed / Lapsed |