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:
Nov. 26, 1991
Filed:
Mar. 06, 1990
Applicant:
Inventors:
Hubert Jager, Biberbach-Eisenbrechtshofen, DE;
Alfred Lorenz, Langweid, DE;
Assignee:
SIGRI GmbH, Meitingen, DE;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C10G / ;
U.S. Cl.
CPC ...
208125 ; 208 39 ; 423448 ; 423449 ; 423445 ; 264 291 ; 264 295 ;
Abstract
The process produces carbon bodies from coal tar pitch coke which have a strongly reduced or no irreversible thermal expansion in the temperature range of 1400.degree. to 2000.degree. C. Before shaping, a sulphonate, carboxylate or phenolate of an alkaline earth metal which is at least partially soluble in the binder is added to the mixing constituents which consist of particulate coke and a cokable binder as raw materials. After the mixing, shaping and firing, bodies are obtained which have only slight puffing upon graphitization.