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. 17, 1997
Filed:
Jun. 27, 1996
Applicant:
Inventors:
Irwin Charles Lewis, Strongsville, OH (US);
Ronald Alfred Greinke, Medina, OH (US);
Assignee:
UCAR Carbon Technology Corporation, Danbury, CT (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B01J / ;
U.S. Cl.
CPC ...
502423 ; 502416 ; 95143 ;
Abstract
A sulfur-containing active carbon, which has a high storage capacity for methane, is produced from inexpensive aromatic precursors, such as chrysene, coal tar and petroleum oils, tars and pitches, by reacting the aromatic precursor with elemental sulfur, followed by carbonization of the sulfur-containing reaction product in an inert atmosphere at an elevated temperature to produce a sulfur-containing carbon. The carbon is then further activated to develop a surface area of at least 600 m.sup.2 /g by heating in an oxidizing atmosphere at an elevated temperature.