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. 05, 1991
Filed:
Aug. 24, 1989
Applicant:
Inventor:
Paul A Piotrowski, Monroeville, PA (US);
Assignee:
Westinghouse Electric Corp., Pittsburgh, PA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C30B / ; C30B / ;
U.S. Cl.
CPC ...
422249 ; 156D / ; 1566201 ;
Abstract
A new lid and shield configuration for use in growing silicon dendritic web crystals is disclosed. The arrangement includes a plurality of spaced apart shields stacked above a lid having a slot therein through which dendritic web crystals are pulled. The shields also have slots in them, each successive shield having a slot slightly larger than that of the shield beneath it. The result is the ability for 100% melt replenishment plus increased productivity.