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:
Oct. 21, 2014
Filed:
Jan. 15, 2008
Manfred Borens, Mainz, DE;
Karsten Von Westernhagen, Mainz, DE;
Stefano Merolla, Mainz, DE;
Gerald Wasem, Schmalfelderhof, DE;
Stefan Postrach, Mainz, DE;
Manfred Borens, Mainz, DE;
Karsten von Westernhagen, Mainz, DE;
Stefano Merolla, Mainz, DE;
Gerald Wasem, Schmalfelderhof, DE;
Stefan Postrach, Mainz, DE;
Schott AG, , DE;
Abstract
A process is disclosed for simple and rapid production of a shaped body comprising fused silica and a shaped body which leads to virtually no contamination of a melt in contact with the shaped body even at high temperatures. The disclosed process comprises the steps of: a) provision of fused silica in the form of essentially amorphous SiOgrains of which not more than 5% have a diameter greater than 15 mm, b) addition of water to the fused silica grains to produce a slip, c) casting of the slip into a mold which comprises a hollow body having the inverse shape of the shaped body to be produced, and d) drying of the slip to give an intermediate body, which is then sintered and cooled. A shaped body producible in accordance with the aforementioned process is also disclosed, which comprises at least 99.0 mol % of SiO.