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:
Jan. 17, 1984
Filed:
Jan. 28, 1983
Ferdinand Quella, Gauting, DE;
Hans-Friedrich Schmidt, Eurasburg, DE;
Siemens Aktiengesellschaft, Berlin & Munich, DE;
Abstract
Glass or vitrified carbon is produced by thermal degradation of polyphenylene sulfide or a substituted compound thereof by additions of an oxide of a sulfide-forming metal, such as Fe.sub.2 O.sub.3, which is added in a weight amount of at least about 1% and preferably about 10%, in order to accelerate the degradation process, and resultant admixture is heated to a temperature above about 150.degree. C. and thereafter the temperature is increased during the course of the reaction. The inventive process is useful for production of chemically resistant glass carbon fibers, glass carbon electrodes, glass carbon containers, etc.