US3188251A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for making semiconductor junction devices
Assignee: RCA Corp
•
Filing: 1962-01-19
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Granted: 1965-06-08
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Expires: 1982-01-19
Abstract
No abstract record available.
Inventors
- 👤 Ronald A Straight
- 👤 Walter P Alina
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 04:56
CPC Classifications
H; H10; H10P; H10P95/00; H10P14/00; H10P14/40; H10P14/46; H10W; H10W72/00; H10W72/90; H10W74/00; H10W74/40; H10W74/47; H10W72/50; H10W72/59; H10W72/851; H10W72/874; H10W72/884; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12528
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
79 words
THE METHOD OF FABRICATING A SEMICONDUCTOR DEVICE COMPRISING THE STEPS OF PREPARING A GIVEN CONDUCTIVITY TYPE CRYSTALLINE SEMICONDUCTIVE WAFER WITH TWO OPPOSING MAJOR FACES; PLATING OVER AT LEAST ONE RESTRICTED AREA ON AT LEAST ONE SAID MAJOR WAFER FACE A THIN COATING OF A MODIFIER CAPABLE OF INDUCING OPPOSITE CONDUCTIVITY TYPE IN SAID WAFER; PLATING ON SAID COATING A LAYER OF A SOLVENT METAL; AND HEATING SAID WAFER TO ALLOY SAID MODIFIER AND SAID SOLVENT METAL TO SAID WAFER.
Claim 2
Independent Claim
79 words
THE METHOD OF FABRICATING A SEMICONDUCTOR DEVICE COMPRISING THE STEPS OF PREPARING A GIVEN CONDUCTIVITY TYPE CRYSTALLINE SEMICONDUCTIVE WAFER WITH TWO OPPOSING MAJOR FACES; PLATING OVER AT LEAST ONE RESTRICTED AREA ON AT LEAST ONE SAID MAJOR WAFER FACE A THIN COATING OF A MODIFIER CAPABLE OF INDUCING OPPOSITE CONDUCTIVITY TYPE IN SAID WAFER; PLATING ON SAID COATING A LAYER OF A SOLVENT METAL; AND HEATING SAID WAFER TO ALLOY SAID MODIFIER AND SAID SOLVENT METAL TO 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) | 1968-06-07 | 1968-12-07 | 1969-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-06-07 | 1972-12-07 | 1973-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-06-07 | 1976-12-07 | 1977-06-08 | $7700.00 | Window Closed / Lapsed |