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:
Feb. 02, 1988
Filed:
May. 01, 1986
Applicant:
Inventors:
Assignee:
Wacker-Chemitronic Gesellschaft fur Elektronic-Grundstoffe mbH, Burghausen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C30B / ;
U.S. Cl.
CPC ...
15662073 ; 156D / ; 156D / ;
Abstract
A method for crucible-free zone pulling of silicon monocrystalline rods is described. According to the invention, a polycrystalline silicon rod obtained by crucible pulling according to the Czochralski procedure is used in lieu of the polycrystalline silicon rod produced by vapor deposition.