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:
Jan. 07, 1997
Filed:
May. 03, 1995
Applicant:
Inventors:
Reinhold Obermeier, Muhldorf, DE;
Gunter Stefaniak, Burgkirchen, DE;
Assignee:
Hoechst AG, Frankfurt Am Main, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07C / ; C07C / ;
U.S. Cl.
CPC ...
554226 ; 562605 ; 562483 ; 562513 ;
Abstract
Fluorinated carboxylic acids can be recovered from materials which contain them by releasing, if necessary, the carboxylic acids with sufficiently strong acids, esterifying the released acids and distilling off the esters. The esters can be advantageously directly hydrolyzed with aqueous ammonia solution to give the corresponding ammonium salts.
Quick Actions:
Obermeier, Reinhold. (1997). Process for the recovery of fluorinated carboxylic acids (U.S. Patent No. 5591877). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5591877
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile