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. 03, 1992
Filed:
Sep. 27, 1991
Applicant:
Inventors:
Lloyd G Becraft, Ponca City, OK (US);
Edward J Nanni, Ponca City, OK (US);
Assignee:
Conoco Inc., Ponca City, OK (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C10G / ;
U.S. Cl.
CPC ...
208131 ; 208 50 ; 208125 ; 208126 ;
Abstract
A non air-blown low sulfur heavy aromatic mineral oil which does not produce acceptable isotropic coke when subjected to delayed coking is combined with an inorganic additive which promotes pyrolysis and which vaporizes during calcining and the combination is subjected to delayed coking to produce isotropic coke having a low CTE ratio. The isotropic coke is further processed (including calcination) to produce graphite logs used in nuclear reactors.