US3255056A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of forming semiconductor junction
Assignee: RCA Corp
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Filing: 1963-05-20
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Granted: 1966-06-07
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Expires: 1983-05-20
Abstract
No abstract record available.
Inventors
- 👤 Doris W Flatley
- 👤 Hans W Becke
- 👤 Stolnitz Daniel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:34
CPC Classifications
H; H10; H10W; H10W74/00; H10W74/40; H10W74/43; H10D; H10D99/00; H10P; H10P95/00; Y; Y10; Y10S; Y10S148/00; Y10S148/043; Y10S148/062; Y10S148/065; Y10S148/078; Y10S148/106; Y10S148/144; Y10S148/145; Y10S148/151
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
80 words
THE METHOD OF FABRICATING A SEMICONDUCTOR JUNCTION DEVICE, COMPRISING THE STEPS OF: (A) DEPOSITING A FIRST INSULATING LAYER ON THE SURFACE OF A CRYSTALLINE SEMICONDUCTIVE WAFER; (B) HEATING SAID WAFER IN AN AMBIENT INCLUDING A SUBSTANCE WHICH IS A CONDUCTIVITY MODIFIER IN SAID WAFER SO AS TO DIFFUSE SOME OF SAID MODIFIER INTO SAID FIRST INSULATING LAYER; (C) HEATING SAID WAFER IN A NON-OXIDIZING MODIFIER-FREE AMBIENT TO DIFFUSE SOME OF SAID MODIFIER FROM SAID FIRST INSULATING LAYER INTO SAID WAFER;
Claim 2
Independent Claim
80 words
THE METHOD OF FABRICATING A SEMICONDUCTOR JUNCTION DEVICE, COMPRISING THE STEPS OF: (A) DEPOSITING A FIRST INSULATING LAYER ON THE SURFACE OF A CRYSTALLINE SEMICONDUCTIVE WAFER; (B) HEATING SAID WAFER IN AN AMBIENT INCLUDING A SUBSTANCE WHICH IS A CONDUCTIVITY MODIFIER IN SAID WAFER SO AS TO DIFFUSE SOME OF SAID MODIFIER INTO SAID FIRST INSULATING LAYER; (C) HEATING SAID WAFER IN A NON-OXIDIZING MODIFIER-FREE AMBIENT TO DIFFUSE SOME OF SAID MODIFIER FROM SAID FIRST INSULATING LAYER INTO SAID WAFER;
References Cited (Backward Citations)
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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) | 1969-06-06 | 1969-12-06 | 1970-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-06 | 1973-12-06 | 1974-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-06 | 1977-12-06 | 1978-06-07 | $7700.00 | Window Closed / Lapsed |