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. 20, 1982
Filed:
Aug. 28, 1980
Applicant:
Inventors:
Heinz Herzog, Karlstein, DE;
Heinrich Mohn, Gelnhausen, DE;
Karl-Albert Schulke, Neuberg, DE;
Holger Grzybowski, Bruchkobel, DE;
Assignee:
Heraeus Quarzschmelze GmbH, Hanau am Main, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C03B / ; B32B / ;
U.S. Cl.
CPC ...
428 36 ; 65-41 ; 65-43 ; 156 82 ; 156 89 ; 156169 ; 156173 ; 156175 ; 1563082 ; 264 56 ; 264 80 ; 264285 ; 264332 ; 428105 ; 428113 ; 428219 ; 428220 ; 428296 ; 428391 ; 428392 ; 428426 ;
Abstract
A method is described for the production of porous bodies from vitreous silica without the use of tools. Vitreous silica wool and/or threads are wound in layers on a form. After the coil has attained a certain minimum thickness, the threads of each succeeding layer are permanently bonded by heating the threads of the preceding layer at the points where the threads cross. The form is removed, and then the threads on the inside of the body are bonded together. The bodies are used for the production of high-purity blocks of silicon for solar cells.