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. 04, 1980
Filed:
Feb. 15, 1978
Applicant:
Inventors:
Manfred Becher, Bingen, DE;
Richard Sehring, Ingelheim am Rhein, DE;
Assignee:
Celamerck GmbH & Co. KG, Ingelheim am Rhein, DE;
Primary Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
562423 ; 562424 ; 562477 ;
Abstract
An improved process for the preparation of 3,6-dichlorosalicylic acid by carboxylation of potassium 2,5-dichlorophenolate with carbon dioxide in xylene at elevated pressure, where the improvement consists of adding finely powdered, anhydrous potassium carbonate to the reaction mixture, whereby the yield of 3,6-dichloro-salicylic acid is significantly increased.
Becher, Manfred. (1980). Process for the preparation of 3,6-dichloro-salicyclic (U.S. Patent No. 4232172). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4232172
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile