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:
Jun. 10, 2014
Filed:
May. 22, 2008
Applicants:
Douglas J. Miller, North Olmsted, OH (US);
Ching-feng Chang, Strongsville, OH (US);
Irwin C. Lewis, Oberlin, OH (US);
Richard T. Lewis, Auburn, OH (US);
Inventors:
Douglas J. Miller, North Olmsted, OH (US);
Ching-Feng Chang, Strongsville, OH (US);
Irwin C. Lewis, Oberlin, OH (US);
Richard T. Lewis, Auburn, OH (US);
Assignee:
GrafTech International Holdings Inc., Parma, OH (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C10C 1/04 (2006.01);
U.S. Cl.
CPC ...
Abstract
A high coking value pitch prepared from coal tar distillate and has a low softening point and a high carbon value while containing substantially no quinoline insolubles is disclosed. The pitch can be used as an impregnant or binder for producing carbon and graphite articles.