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:
Mar. 24, 2015
Filed:
Jun. 07, 2010
Applicants:
Philippe Carvin, Lyons, FR;
Stéphanie Foucher, Meyzieu, FR;
Inventors:
Philippe Carvin, Lyons, FR;
Stéphanie Foucher, Meyzieu, FR;
Assignee:
Rhodia Operations, Aubervilliers, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C 51/42 (2006.01); C07C 51/43 (2006.01);
U.S. Cl.
CPC ...
C07C 51/43 (2013.01); C07C 51/43 (2013.01); C07C 55/14 (2013.01);
Abstract
A method for producing crystals of adipic acid is described. In particular, a method for recovering adipic acid in the form of crystals with low impurity content, obtained by crystallization steps in particular using reaction media for synthesizing adipic acid is described. A purification method including a step of crushing the crystals for easier removal or the migration of the impurities in the crystals is also described.