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:
Jan. 13, 1976
Filed:
May. 25, 1973
Applicant:
Inventors:
Assignee:
Bayer Aktiengesellschaft, Leverkusen-Bayerwerk, DT;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C09B / ;
U.S. Cl.
CPC ...
2602 / ; 8 1 / ; 2602 / ; 2602 / ; 2602 / ; 2602 / ; 2602 / ; 2602 / ; 2602 / ; 2603268 ; 2603322 ; 2603 / ; 2603473 ;
Abstract
Quinophthalone dyestuffs of the formula ##SPC1## In which Ac denotes an acyl radical, X denotes a non-ionic substituent, Y denotes hydrogen or halogen and n denotes a number from 0 to 3 as well as their production and their use for dyeing and printing organic materials.