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:
Oct. 29, 1991
Filed:
Oct. 29, 1990
Applicant:
Inventors:
David L Coffen, Glenridge, NJ (US);
Panayiotis Kalaritis, New Providence, NJ (US);
John J Patridge, Upper Montclair, NJ (US);
Assignee:
Hoffman-La Roche Inc., Nutley, NJ (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07C / ; C12P / ; C12P / ;
U.S. Cl.
CPC ...
435280 ; 435135 ; 435136 ; 435874 ;
Abstract
Enantiomerically pure (2R)-2-hydroxy arylalkanoic acid esters and (2S)-2-hydroxy arylalkanoic acids are prepared by the Pseudomonas lipase-catalyzed selective hydrolyxis of racemic (2RS)-2-hydroxy arylalkanoic acid esters in solution or suspension in an aqueous medium at a controlled pH of from about 5 to about 9.