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. 13, 1995
Filed:
Aug. 23, 1994
Applicant:
Inventors:
Rolf Muller, Karben-Rendel, DE;
Thomas Wessel, Frankfurt am Main, DE;
Assignee:
Cassella AG, Frankfurt, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
560 64 ; 560 56 ;
Abstract
The invention relates to a preparation process for aromatic methyl methoxycarboxylates by reaction of aromatic hydroxycarboxylic acids in the form of a mixture with the methoxycarboxylic acids with dimethyl sulphate in water.