US3375145A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making semiconductor devices
Assignee: International Standard Electric Corp
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Filing: 1965-08-25
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Granted: 1968-03-26
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Expires: 1985-08-25
Abstract
No abstract record available.
Inventors
- 👤 Setchfield John Bernard
- 👤 Allen Stanley George
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 14:57
CPC Classifications
H; H10; H10W; H10W72/00; H10W72/20; H10D; H10D99/00; Y; Y10; Y10S; Y10S438/00; Y10S438/979
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
119 words
A METHOD OF MANUFACTURING A SEMICONDUCTOR JUNCTION DEVICE WHICH INCLUDES THE STEPS OF PROVIDING A LAYER OF SEMICONDUCTOR MATERIAL OF ONE CONDUCTIVITY TYPE ON PART OF A FACE OF AN EFFECTIVELY INSULATING BASE, PROVIDING AN ELECTRICALLY CONDUCTING LAYER ON ANOTHER PART OF SAID FACE SPACED FROM SAID SEMICONDUCTOR LAYER, PLACING A PELLET OF IMPURITY MATERIAL OF THE OPPOSITE CONDUCTIVITY TYPE IN THE SPACE BETWEEN SAID SEMICONDUCTOR LAYER AND SAID CONDUCTING LAYER WITH THE PELLET IN CONTACT WITH EACH OF SAID LAYERS, AND HEATING SO AS TO ALLOY SAID IMPURITY MATERIAL WITH SAID SEMICONDUCTOR LAYER TO FORM A JUNCTION THEREIN AND WITH SAID CONDUCTING LAYER TO ESTABLISH OHMIC ELECTRICAL CONNECTION BETWEEN SAID OPPOSITE CONDUCTIVITY TYPE MATERIAL AND SAID CONDUCTING LAYER.
Claim 2
Independent Claim
119 words
A METHOD OF MANUFACTURING A SEMICONDUCTOR JUNCTION DEVICE WHICH INCLUDES THE STEPS OF PROVIDING A LAYER OF SEMICONDUCTOR MATERIAL OF ONE CONDUCTIVITY TYPE ON PART OF A FACE OF AN EFFECTIVELY INSULATING BASE, PROVIDING AN ELECTRICALLY CONDUCTING LAYER ON ANOTHER PART OF SAID FACE SPACED FROM SAID SEMICONDUCTOR LAYER, PLACING A PELLET OF IMPURITY MATERIAL OF THE OPPOSITE CONDUCTIVITY TYPE IN THE SPACE BETWEEN SAID SEMICONDUCTOR LAYER AND SAID CONDUCTING LAYER WITH THE PELLET IN CONTACT WITH EACH OF SAID LAYERS, AND HEATING SO AS TO ALLOY SAID IMPURITY MATERIAL WITH SAID SEMICONDUCTOR LAYER TO FORM A JUNCTION THEREIN AND WITH SAID CONDUCTING LAYER TO ESTABLISH OHMIC ELECTRICAL CONNECTION BETWEEN SAID OPPOSITE CONDUCTIVITY TYPE MATERIAL AND SAID CONDUCTING LAYER.
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) | 1971-03-26 | 1971-09-25 | 1972-03-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-03-26 | 1975-09-25 | 1976-03-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-03-26 | 1979-09-25 | 1980-03-26 | $7700.00 | Window Closed / Lapsed |