The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 25, 1978
Filed:
Apr. 14, 1977
Applicant:
Inventors:
Robert Mazelsky, Monroeville, PA (US);
Maurice G Fey, Plum Borough, PA (US);
Francis J Harvey, Murrysville, PA (US);
Assignee:
Westinghouse Electric Corp., Pittsburgh, PA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01K / ; C01B / ; C04B / ; H01L / ;
U.S. Cl.
CPC ...
204164 ; 423350 ; 252 / ;
Abstract
A method for the production of single crystal silicon characterized by the steps of feeding into an arc heater a quantity of uncontaminated silicon halide to react with hydrogen or a metal reductant, such as sodium, to produce reaction products including liquid silicon and a gaseous salt of the reductant, depositing the liquid silicon on a downwardly inclined surface, and attaching a single seed crystal of silicon to the liquid silicon and withdrawing the single seed crystal from the liquid silicon so as to propagate a large single crystal.