US2829999A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fused junction silicon semiconductor device
Assignee: Raytheon Co
•
Filing: 1956-03-30
•
Granted: 1958-04-08
•
Expires: 1976-03-30
Abstract
No abstract record available.
Inventors
- 👤 Richard A Gudmundsen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 07:34
CPC Classifications
H; H10; H10P; H10P95/00; C; C30; C30B; C30B31/00; C30B31/04; H10D; H10D62/00; H10D62/80; H10D62/83; H10D62/834
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
107 words
IN A FUSED JUNCTION SILICON SEMICONDUCTOR DEVICE THE COMBINATION COMPRISING: A FIRST REGION OF N-TYPE CONDUCTIVITY, AND AN ACTIVE IMPURITY-DOPED REGROWN REGION OF P-TYPE CONDUCTIVITY IN ONE FACE OF SAID FIRST REGION, SAID REGROWN REGION CONTAINING ATOMS OF BORON AND ALUMINUM, THE NUMBER OF BORON ATOMS PRESENT IN SAID REGROWN REGION BEING SUBSTANTIALLY EQUAL TO THE SEGREGATION CONSTANT K1 OF BORON IN SILICON TIMES THE CONCENTRATION OF BORON IN THE LIQUID SOLUTION, SAID SEGREGATION CONSTANT BEING DEFINED AS THE CONCENTRATION OF BORON ATOMS IN THE SOLID SOLUTION OF SILICON AND BORON DIVIDED BY THE CONCENTRATION OF BORON ATOMS IN THE LIQUID SOLUTION OF BORON, ALUMINUM AND SILICON.
Claim 2
Dependent Claim
107 words
IN A FUSED JUNCTION SILICON SEMICONDUCTOR DEVICE THE COMBINATION COMPRISING: A FIRST REGION OF N-TYPE CONDUCTIVITY, AND AN ACTIVE IMPURITY-DOPED REGROWN REGION OF P-TYPE CONDUCTIVITY IN ONE FACE OF SAID FIRST REGION, SAID REGROWN REGION CONTAINING ATOMS OF BORON AND ALUMINUM, THE NUMBER OF BORON ATOMS PRESENT IN SAID REGROWN REGION BEING SUBSTANTIALLY EQUAL TO THE SEGREGATION CONSTANT K1 OF BORON IN SILICON TIMES THE CONCENTRATION OF BORON IN THE LIQUID SOLUTION, SAID SEGREGATION CONSTANT BEING DEFINED AS THE CONCENTRATION OF BORON ATOMS IN THE SOLID SOLUTION OF SILICON AND BORON DIVIDED BY THE CONCENTRATION OF BORON ATOMS IN THE LIQUID SOLUTION OF BORON, ALUMINUM AND SILICON.
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) | 1961-04-07 | 1961-10-07 | 1962-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-04-07 | 1965-10-07 | 1966-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-04-07 | 1969-10-07 | 1970-04-08 | $7700.00 | Window Closed / Lapsed |