Patent US3093520A successfully refreshed from Google Patents.
US3093520A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Semiconductor dendritic crystals
Assignee: Westinghouse Electric Corp
•
Filing: 1960-03-11
•
Granted: 1963-06-11
•
Expires: 1980-03-11
Abstract
No abstract record available.
Inventors
- 👤 Harold F John
- 👤 Jr John W Faust
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:37
CPC Classifications
C; C30; C30B; C30B15/00; C30B15/36; C30B29/00; C30B29/60; H; H10; H10P; H10P95/00; Y; Y10; Y10S; Y10S117/00; Y10S117/903; Y10S438/00; Y10S438/965
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
143 words
A DENDRITE OF SEMICONDUCTOR MATERIAL WHICH EXHIBITS AREAS OF DIFFERENT TYPE OF SEMICONDUCTIVITY IN A TRANSVERSE CROSS-SECTION OF THE DENDRITE, COMPRISING AN ELONGATED BODY HAVING TWO SUBSTANTIALLY PARALLEL FLAT FACES OF (111) ORIENTATION EXTENDING IN THE LENGTHWISE DIRECTION, THE DENDRITE HAVING TWO SUBSTANTIALLY SYMMETRICAL PORTIONS DISPOSED ABOUT A (110) PLANE PERPENDICULAR TO THE (111) FACES AND EXTENDING MIDWAY OF THE EDGES ALONG THE LENGTHWISE DIRECTION OF THE DENDRITE, EACH XYMMETRICAL PORTION COMPRISING, (1) AT LEAST TWO LEGS EXTENDING SUBSTANTIALLY PERPENDICULARLY FROM SAID (110) PLANE, THE TWO OUTER MOST LEGS FORMING THE FLAT FACES OF THE DENDRITE, (2) A CENTRAL CORSS-BAR CONNECTING THE LEGS AT THE SAID PLANE, THE LEGS AND THE CROSS-BAR BEING OF ONE TYPE OF SEMICONDUCTIVITY, AND (3) AT LEAST ONE AREA BETWEEN THE LEGS EXTENDING LATERALLY FROM THE CROSS-BAR TO THE OUTSIDE EDGE BEING OF THE OPPOSITE TYPE OF SEMICONDUCTIVITY.
Claim 2
Dependent Claim
143 words
A DENDRITE OF SEMICONDUCTOR MATERIAL WHICH EXHIBITS AREAS OF DIFFERENT TYPE OF SEMICONDUCTIVITY IN A TRANSVERSE CROSS-SECTION OF THE DENDRITE, COMPRISING AN ELONGATED BODY HAVING TWO SUBSTANTIALLY PARALLEL FLAT FACES OF (111) ORIENTATION EXTENDING IN THE LENGTHWISE DIRECTION, THE DENDRITE HAVING TWO SUBSTANTIALLY SYMMETRICAL PORTIONS DISPOSED ABOUT A (110) PLANE PERPENDICULAR TO THE (111) FACES AND EXTENDING MIDWAY OF THE EDGES ALONG THE LENGTHWISE DIRECTION OF THE DENDRITE, EACH XYMMETRICAL PORTION COMPRISING, (1) AT LEAST TWO LEGS EXTENDING SUBSTANTIALLY PERPENDICULARLY FROM SAID (110) PLANE, THE TWO OUTER MOST LEGS FORMING THE FLAT FACES OF THE DENDRITE, (2) A CENTRAL CORSS-BAR CONNECTING THE LEGS AT THE SAID PLANE, THE LEGS AND THE CROSS-BAR BEING OF ONE TYPE OF SEMICONDUCTIVITY, AND (3) AT LEAST ONE AREA BETWEEN THE LEGS EXTENDING LATERALLY FROM THE CROSS-BAR TO THE OUTSIDE EDGE BEING OF THE OPPOSITE TYPE OF SEMICONDUCTIVITY.
References Cited (Backward Citations)
US2928761A
Cited
US2935478A
Cited
US2879189A
Cited
US2954307A
Cited
US2929753A
Cited
US2937114A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-06-10 | 1966-12-10 | 1967-06-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-06-10 | 1970-12-10 | 1971-06-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-06-10 | 1974-12-10 | 1975-06-11 | $7700.00 | Window Closed / Lapsed |