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. 09, 2014
Filed:
Jul. 21, 2011
Applicants:
Douglas J. Miller, North Olmsted, OH (US);
Ching-feng Chang, Strongville, OH (US);
Irwin C. Lewis, Oberlin, OH (US);
Aaron Tomasek, Wooster, OH (US);
Richard L. Shao, North Royalton, OH (US);
Inventors:
Douglas J. Miller, North Olmsted, OH (US);
Ching-Feng Chang, Strongville, OH (US);
Irwin C. Lewis, Oberlin, OH (US);
Aaron Tomasek, Wooster, OH (US);
Richard L. Shao, North Royalton, OH (US);
Assignee:
GrafTech International Holdings Inc., Parma, OH (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C01B 31/00 (2006.01); C10B 55/00 (2006.01); C10C 1/18 (2006.01); C10B 57/04 (2006.01); C10C 1/20 (2006.01);
U.S. Cl.
CPC ...
C10B 55/00 (2013.01); C10C 1/18 (2013.01); C10B 57/045 (2013.01); C10C 1/20 (2013.01);
Abstract
A reduced puffing needle coke is formed, which includes a lesser amount of nitrogen within the coke so that carbon articles produced from such coke experience minimal expansion upon heating to graphitization temperatures.