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:
Apr. 05, 1983
Filed:
Jun. 19, 1981
Applicant:
Inventors:
Maximilian Zander, Castrop-Rauxel, DE;
Gerd-Peter Blumer, Datteln, DE;
Gerd Collin, Duisburg, DE;
Herbert Glaser, Gladbeck, DE;
Rolf Marrett, Castrop-Rauxel, DE;
Assignee:
Rutgerswerke Aktiengesellschaft, Frankfurt am Main, DE;
Primary Examiner:
Int. Cl.
CPC ...
C01B / ; C09C / ; C10G / ;
U.S. Cl.
CPC ...
423445 ; 208 40 ; 208 44 ; 208 45 ; 208330 ; 4234474 ; 423449 ;
Abstract
An improved process for treating coal tar pitch to form anisotropic carbon comprising treating coal tar pitch with picric acid, recovering the resulting picrates, decomposing the picrates and heating the resulting aromatic hydrocarbons to obtain anisotropic carbon in less time.