Patent US3290188A successfully refreshed from Google Patents.
US3290188A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Epitaxial alloy semiconductor devices and process for making them
Assignee: Hoffman Electronics Corp
•
Filing: 1964-01-10
•
Granted: 1966-12-06
•
Expires: 1984-01-10
Abstract
No abstract record available.
Inventors
- 👤 Ross Bernd
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 09:39
CPC Classifications
H; H10; H10P; H10P95/00; C; C30; C30B; C30B19/00; H10D; H10D99/00; Y; Y10; Y10S; Y10S148/00; Y10S148/107; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12528
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
71 words
A PROCESS OF FORMING A SEMICONDUCTOR DEVICE, COMPRISING: FORMING A PREALLOY OF A SEMICONDUCTOR AND A DOPANT MATERIAL, DISPOSING A PORTION OF SAID PREALLOY ON A BODY OF SEMICONDUCTOR MATERIAL, HEATING SAID PREALLOY PORTION DISPOSED ON SAID BODY TO A TEMPERATURE ABOVE THE EUTECTIC TEMPERATURE OF SAID PREALLOY, AND COOLING SAID PREALLOY TO DEPOSIT AN EPITAXIAL LAYER OF THE SEMICONDUCTOR MATERIAL PRECIPITATED FROM SAID PREALLOY ONTO SAID BODY OF SEMICONDUCTOR MATERIAL.
Claim 2
Dependent Claim
71 words
A PROCESS OF FORMING A SEMICONDUCTOR DEVICE, COMPRISING: FORMING A PREALLOY OF A SEMICONDUCTOR AND A DOPANT MATERIAL, DISPOSING A PORTION OF SAID PREALLOY ON A BODY OF SEMICONDUCTOR MATERIAL, HEATING SAID PREALLOY PORTION DISPOSED ON SAID BODY TO A TEMPERATURE ABOVE THE EUTECTIC TEMPERATURE OF SAID PREALLOY, AND COOLING SAID PREALLOY TO DEPOSIT AN EPITAXIAL LAYER OF THE SEMICONDUCTOR MATERIAL PRECIPITATED FROM SAID PREALLOY ONTO SAID BODY OF SEMICONDUCTOR MATERIAL.
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) | 1969-12-05 | 1970-06-06 | 1970-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-05 | 1974-06-06 | 1974-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-05 | 1978-06-06 | 1978-12-06 | $7700.00 | Window Closed / Lapsed |