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:
Dec. 25, 1979
Filed:
Sep. 11, 1975
Applicant:
Inventors:
Dieter vor der Bruck, Cologne, DE;
Gerhard Wolfrum, Bergisch-Neukirchen, DE;
Assignee:
Bayer Aktiengesellschaft, Leverkusen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09B / ; C09B / ; C09B / ; C09B / ;
U.S. Cl.
CPC ...
260152 ; 260156 ; 260157 ; 260158 ; 260160 ; 260165 ;
Abstract
Dyestuffs which in the free acid form correspond to the formula ##STR1## wherein A represents the radical of an aromatic carbocyclic or aromatic heterocyclic diazo component,
vor der Bruck, Dieter. (1979). Acid disazo dyestuffs containing a substituted thiophene middle component (U.S. Patent No. 4180503). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4180503
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile