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:
Sep. 15, 1981
Filed:
Mar. 31, 1977
Applicant:
Inventors:
Georg Kolling, Essen-Bredeney, DE;
Gerhard Pietzka, Vockenhausen, DE;
Ingo Romey, Hunxe, DE;
Harald Tillmanns, Kelkheim, DE;
Assignees:
Bergwerksverband GmbH, Meitingen, DE;
Sigri Elektrographit GmbH, Essen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C10B / ;
U.S. Cl.
CPC ...
208106 ; 423445 ; 423448 ; 423449 ;
Abstract
Manufacture of isotropic coke by first selecting as feed material tar from low temperature carbonization with a hydrogen content above 5.5%, a carbon content less than 88% and a softening point above 60.degree. C., filtering the tar to remove solid particles, and heating the filtrate to a temperature between about 900.degree. C. and 1300.degree. C. to form an isotropic coke.
Kolling, Georg. (1981). Method of producing an isotropic coke (U.S. Patent No. 4289604). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4289604
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile