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:
Dec. 26, 2006
Filed:
Sep. 23, 2005
Applicants:
Michael Lawrence Casner, Pitman, NJ (US);
Jen-sen Dung, Boothwyn, PA (US);
Erno M. Keskeny, Wilmington, DE (US);
Jin Luo, Fulletron, CA (US);
Inventors:
Michael Lawrence Casner, Pitman, NJ (US);
Jen-Sen Dung, Boothwyn, PA (US);
Erno M. Keskeny, Wilmington, DE (US);
Jin Luo, Fulletron, CA (US);
Assignee:
Johnson Matthey Public Limited Company, London, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D 489/08 (2006.01); C07D 489/04 (2006.01);
U.S. Cl.
CPC ...
Abstract
A process for preparing oxycodone or an oxycodone salt, wherein the oxycodone or oxycodone salt has low levels of impurities (especially 14-hydroxycodeinone) is disclosed. The process comprises the steps of: