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:
Apr. 27, 2010
Filed:
May. 15, 2009
Greg Buenger, Charles City, IA (US);
Jason Douglas, Charles City, IA (US);
Paul Jass, Charles City, IA (US);
Erik Michalson, Charles City, IA (US);
Matthew Schiesher, Charles City, IA (US);
Greg Buenger, Charles City, IA (US);
Jason Douglas, Charles City, IA (US);
Paul Jass, Charles City, IA (US);
Erik Michalson, Charles City, IA (US);
Matthew Schiesher, Charles City, IA (US);
Cambrex Charles City, Inc., Charles City, IA (US);
Abstract
A method in which a crude chlorinated product of a phenylpropanolamine, preferably prepared by reacting thionyl chloride with the phenylpropanolamine, is purified by contacting an aqueous solution of the crude product with carbon. The carbon-treated solution of the crude chlorinated product of a phenylpropanolamine is catalytically hydrogenated to the corresponding amphetamine derivative.