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:
Nov. 22, 2005
Filed:
Nov. 24, 2000
Applicants:
Jan Van Krieken, Gorinchem, NL;
Johannes Jeichinus DE Vries, Dalem, NL;
Symone Kok, Giessenburg, NL;
Inventors:
Jan Van Krieken, Gorinchem, NL;
Johannes Jeichinus De Vries, Dalem, NL;
Symone Kok, Giessenburg, NL;
Assignee:
Purac Biochem B.V., , NL;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07C069/66 ; C07C051/42 ;
U.S. Cl.
CPC ...
Abstract
The invention relates to a method of purifying lactic acid esters, wherein an impure lactic acid ester is subjected to a melt crystallization. The impure lactic acid contains not more than 10 wt. % of impurities, based on the total amount of ester, and has a chiral purity of more than 90%. The ester is derived from lactic acid and a C–Calcohol.
Van Krieken, Jan. (2005). Method of purifying lactic acid esters (U.S. Patent No. 6967257). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/6967257
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile