Patents by Inventor Greg Buenger

Greg Buenger has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Method of making amphetamine
    Patent number: 7705184
    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.
    Type: Grant
    Filed: May 15, 2009
    Date of Patent: April 27, 2010
    Assignee: Cambrex Charles City, Inc.
    Inventors: Greg Buenger, Jason Douglas, Paul Jass, Erik Michalson, Matthew Schiesher
  • METHOD OF MAKING AMPHETAMINE
    Publication number: 20090292143
    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.
    Type: Application
    Filed: May 15, 2009
    Publication date: November 26, 2009
    Applicant: Cambrex Charles City
    Inventors: Greg Buenger, Jason Douglas, Paul Jass, Erik Michalson, Matthew Schiesher