US2979427A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Semiconductor device and method of making the same
Assignee: Individual
•
Filing: 1957-03-18
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Granted: 1961-04-11
•
Expires: 1977-03-18
Abstract
No abstract record available.
Inventors
- 👤 Shockley William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:41
CPC Classifications
H; H10; H10D; H10D62/00; H10D62/60; H10D10/00; H10D62/10; H10D84/00; H10D84/01; H10D99/00; H10P; H10P32/00; H10P36/00; H10P95/00; Y; Y10; Y10S; Y10S438/00; Y10S438/914; Y10S438/919; Y10S438/922
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
76 words
A SEMICONDUCTOR DEVICE COMPRISING A CRYSTAL OF SEMICONDUCTOR MATERIAL HAVING THREE GRAIN BOUNDARIES, REGIONS OF IMPURITY SEMICONDUCTIVE MATERIAL DISPOSED ALONG SAID GRAIN BOUNDARIES AND SUPPORTED BY THE CRYSTAL, TWO OF SAID REGIONS BEING OF ONE CONDUCTIVITY TYPE AND THE OTHER OF SAID REGIONS BEING OF OPPOSITE CONDUCTIVITY TYPE, SAID REGIONS HAVING A PORTION IN OPERATIVE RELATIONSHIP WITH ONE ANOTHER, SAID CRYSTAL BEING SUBSTANTIALLY LESS CONDUCTIVE THAN THE IMPURITY MATERIAL, AND OHMIC CONTACTS FORMED TO SAID REGIONS.
Claim 2
Dependent Claim
76 words
A SEMICONDUCTOR DEVICE COMPRISING A CRYSTAL OF SEMICONDUCTOR MATERIAL HAVING THREE GRAIN BOUNDARIES, REGIONS OF IMPURITY SEMICONDUCTIVE MATERIAL DISPOSED ALONG SAID GRAIN BOUNDARIES AND SUPPORTED BY THE CRYSTAL, TWO OF SAID REGIONS BEING OF ONE CONDUCTIVITY TYPE AND THE OTHER OF SAID REGIONS BEING OF OPPOSITE CONDUCTIVITY TYPE, SAID REGIONS HAVING A PORTION IN OPERATIVE RELATIONSHIP WITH ONE ANOTHER, SAID CRYSTAL BEING SUBSTANTIALLY LESS CONDUCTIVE THAN THE IMPURITY MATERIAL, AND OHMIC CONTACTS FORMED TO SAID REGIONS.
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) | 1964-04-10 | 1964-10-10 | 1965-04-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-04-10 | 1968-10-10 | 1969-04-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-04-10 | 1972-10-10 | 1973-04-11 | $7700.00 | Window Closed / Lapsed |