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:
Jul. 28, 1998
Filed:
Sep. 26, 1997
Applicant:
Inventor:
Shivakumar B Hendi, Newark, DE (US);
Assignee:
Ciba Specialty Chemicals Corporation, Tarrytown, NY (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07D / ; C09B / ;
U.S. Cl.
CPC ...
106497 ; 544125 ; 544333 ; 544361 ;
Abstract
Pyrrolopyrrole derivatives of the formula (I) ##STR1## wherein QA is a quinacridone radical are disclosed. The inventive pyrrolopyrrole derivatives show excellent rheology enhancing properties for pigment dispersions, especially those containing quinacridones, DPPs and their solid solution pigments.
Hendi, Shivakumar. (1998). 1,4-diketo-3,6-diarylpyrolo�3,4-c! pyrrole (U.S. Patent No. 5785750). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5785750
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