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:
Mar. 02, 1976
Filed:
Feb. 20, 1974
Hans Stut, Grobenzell, DT;
Gerhard Barowski, Munich, DT;
Siemens Aktiengesellschaft, Berlin & Munich, DT;
Abstract
A method for producing highly pure silicon, or another semiconductor material, includes depositing the element from a corresponding reaction gas at the surface of several rod shaped carrier members composed of highly pure material, the carrier members being connected in series and permeated by a heating current supplied by an operational current source. In heating the serially connected carrier members, the members are first preheated by the application of a high voltage from a three phase supply, the carrier members being subdivided into groups with each group charged by a separate phase of the three phase voltage. Preheating is performed prior to connecting all of the carrier members to the operational supply.