US3649192A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of manufacturing semiconductor compounds
Assignee: US Philips Corp
•
Filing: 1969-03-21
•
Granted: 1972-03-14
•
Expires: 1989-03-21
Abstract
Abstract A method of making III-V semiconductor compounds in which a quantity of boron oxide is added to the reactants in a closed vessel to inhibit reactions with the material of the vessel, e.g., silicon dioxide.
Inventors
- 👤 Emile Deyris
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 12:08
CPC Classifications
C; C30; C30B; C30B29/00; C30B29/10; C30B29/40; C30B11/00; C30B29/42; Y; Y10; Y10S; Y10S117/00; Y10S117/906; Y10S148/00; Y10S148/056; Y10S148/065; Y10S420/00; Y10S420/903
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
54 words
A method as claimed in claim 1, in which the AIII element is gallium and the BV element is arsenic and the reactor is heated to a temperature at which the vapor pressure of the arsenic is at least equal to that of arsenic above gallium arsenide at the melting temperature of the latter.
Claim 2
Dependent Claim
124 words
A method as claimed in claim 2, in which the reaction is carried out in a closed reactor, which is formed by two spaces which communicate with each other, a quantity of gallium being introduced in the first of the said spaces and a quantity of arsenic exceeding the quantity of gallium and a quantity of boron oxide which is equal to 0.2 to 3 percent of the weight of gallium is introduced in the second space, the first space is heated at approximately 1,270* C. and the second space is heated at at least 610* C. and, after maintaining said temperatures for at least the period necessary for the formation of the compound, the first space is gradually cooled in a conventional manner.
References Cited (Backward Citations)
US3353912A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-03-14 | 1975-09-13 | 1976-03-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-03-14 | 1979-09-13 | 1980-03-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-03-14 | 1983-09-13 | 1984-03-14 | $7700.00 | Window Closed / Lapsed |