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. 23, 1999
Filed:
Sep. 19, 1997
Applicant:
Inventors:
Bernd Lamatsch, Marly, CH;
Olof Wallquist, Marly, CH;
Assignee:
Ciba Specialty Chemicals Corporation, Tarrytown, NY (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07D / ; C07D / ; C07D / ; C07D / ;
U.S. Cl.
CPC ...
548453 ; 548453 ; 548454 ; 548455 ; 548467 ; 5483415 ; 548519 ; 548400 ; 548255 ; 5483355 ; 5483751 ; 548440 ; 548490 ; 5483631 ; 568735 ; 546184 ; 546153 ; 544358 ; 544106 ; 544 59 ;
Abstract
Diketopyrrolopyrroles of formula I ##STR1## are prepared by reacting a diketopyrrolopyrrole of formula II ##STR2## with a) formic acid or b) a compound of formula III
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Lamatsch, Bernd. (1999). Process for the preparation of diketopyrrolopyrrolecarboxylic acids and (U.S. Patent No. 5874588). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5874588
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile