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:
Jun. 25, 2013
Filed:
Nov. 18, 2009
Philippe Coszach, Courcelles, BE;
Jean-christophe Bogaert, Ligne, BE;
Pierre-antoine Mariage, Pipaix, BE;
Angelo Chianese, Rome, IT;
Maria-paola Parisi, Rome, IT;
Philippe Coszach, Courcelles, BE;
Jean-Christophe Bogaert, Ligne, BE;
Pierre-Antoine Mariage, Pipaix, BE;
Angelo Chianese, Rome, IT;
Maria-Paola Parisi, Rome, IT;
Galactic S.A., Escanaffles, BE;
Abstract
Method for purifying lactic acid by crystallization in one or a plurality of steps, characterized in that crystals are formed from an impure aqueous lactic acid solution having a color of >500 Hazen, at a concentration between 85 and 95% by controlling the lactic acid oligomer content expressed in terms of a relative monomer content greater than 80% and controlling the degree of supersaturation of the solution between 1 and 60% in order to obtain lactic acid crystals having a specific surface area by mass of <0.05 m/g.