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:
Aug. 25, 1987
Filed:
Sep. 09, 1985
Applicant:
Inventors:
Martin Blunck, Cologne, DE;
Uwe Claussen, Leverkusen, DE;
Friedrich W Krock, Odenthal, DE;
Rutger Neeff, Leverkusen, DE;
Assignee:
Bayer Aktiengesellschaft, Leverkusen, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C09K / ; C07C / ; C09B / ; G02F / ;
U.S. Cl.
CPC ...
2522991 ; 260377 ; 260380 ; 260381 ; 260378 ; 350349 ;
Abstract
Dyestuffs of the formula ##STR1## in which Y.sub.1, Y.sub.2, Y.sub.3, Y.sub.4 designate hydrogen, halogen, nitro, amino, alkylamino, arylamino, cycloalkylamino, aralkylamino, alkylthio, arylthio, cycloalkylthio, aralkylthio or hydroxyl, it being possible for the hydrocarbon radicals to be sustituted, with the proviso that
Blunck, Martin. (1987). Anthraquinone dyestuffs, their preparation and use and dichroic material (U.S. Patent No. 4689171). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4689171
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile