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:
Jul. 23, 2013
Filed:
May. 15, 2008
Britt A. Minch, Tarentum, PA (US);
Charles R. Hickenboth, Cranberry Township, PA (US);
Richard F. Karabin, Ruffs Dale, PA (US);
Steven R. Zawacky, Pittsburgh, PA (US);
Thomas R. Hockswender, Gibsonia, PA (US);
Gregory J. Mccollum, Gibsonia, PA (US);
Britt A. Minch, Tarentum, PA (US);
Charles R. Hickenboth, Cranberry Township, PA (US);
Richard F. Karabin, Ruffs Dale, PA (US);
Steven R. Zawacky, Pittsburgh, PA (US);
Thomas R. Hockswender, Gibsonia, PA (US);
Gregory J. McCollum, Gibsonia, PA (US);
PPG Industries Ohio, Inc., Cleveland, OH (US);
Abstract
The present invention is directed to a method producing bicyclic guanidine comprising heating a cyclic thiourea to a temperature ranging from ≧140° C. in a substantially non-hydrocarbon solvent to form the bicyclic guanidine.