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:
Apr. 11, 1989
Filed:
Feb. 18, 1988
Applicant:
Inventors:
Dario R Cova, Kirkwood, MO (US);
John M Thorman, Chesterfield, MO (US);
Assignee:
Monsanto Company, St. Louis, MO (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B01D / ; B01D / ; C07C / ;
U.S. Cl.
CPC ...
203-2 ; 203 14 ; 203 67 ; 203 69 ; 203 70 ; 203 82 ; 203 84 ; 203 99 ; 203D / ; 203D / ; 560177 ; 560186 ;
Abstract
An improved process for separating high purity alkyl glyoxylate from complex mixtures containing alkyl glyoxylate, alkyl glycolate, water, alcohol and miscellaneous impurities by an azeotropic distillation operation using an azeotroping agent selected from the group consisting of methylene dichloride, 1,1,1--trichloroethane, and benzene.
Cova, Dario. (1989). Purification of alkyl glyoxylate in a continuous column by azeotropic (U.S. Patent No. 4820385). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4820385
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile