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:
Apr. 29, 1986
Filed:
Nov. 25, 1981
Applicant:
Inventors:
Assignee:
Bayer Aktiengesellschaft, Leverkusen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09K / ; C09B / ; C09B / ; C09B / ;
U.S. Cl.
CPC ...
2522991 ; 260371 ; 260372 ; 260373 ; 260374 ; 260377 ; 260378 ; 260380 ; 260381 ; 350349 ; 548146 ; 548156 ; 548160 ; 548194 ; 548187 ; 549472 ; 549480 ;
Abstract
Anthraquinone dyestuffs of the formula ##STR1## in which R.sub.1 and R.sub.2 denote hydrogen, alkyl, cycloalkyl, aryl or aralkyl, and the said hydrocarbon radicals can be substituted, and