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:
Feb. 09, 1999
Filed:
Aug. 13, 1997
Applicant:
Inventor:
Klaus-Dieter Steffen, Hennef, DE;
Assignee:
Huels Aktiengesellschaft, Marl, DE;
Primary Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
560124 ; 558357 ; 562506 ; 564152 ;
Abstract
A cyclopropane-1,1-dicarboxylic acid compound is prepared by reacting a malonic acid compound and a 1,2-dihalogeno compound with an alcoholate as a condensation agent which is gradually added to a mixture of said malonic acid compound and said 1,2-chloro compound as a solution or suspension is an alcohol.
Quick Actions:
Steffen, Klaus-Dieter. (1999). Process for the preparation of cyclopropane-1, 1-dicarboxylic acid (U.S. Patent No. 5869737). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5869737
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile