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. 27, 1981
Filed:
Nov. 07, 1977
Applicant:
Inventor:
Beat Henzi, Neuallschwil, CH;
Assignee:
Sandoz Ltd., Basel, CH;
Primary Examiner:
Int. Cl.
CPC ...
C07C / ; C09B / ; C09B / ; C09B / ;
U.S. Cl.
CPC ...
260158 ; 2601 / ; 2601 / ; 2601 / ; 260147 ; 260148 ; 260149 ; 260151 ; 260152 ; 260154 ; 260156 ; 260157 ; 260159 ; 260162 ; 260163 ; 260164 ; 260165 ; 260177 ; 260184 ; 260185 ; 260186 ; 260187 ; 26034672 ; 260377 ; 260379 ;
Abstract
Basic dyes, e.g., azo dyes and anthraquinone dyes, free from sulphonic acid groups which contain, a group of the formula ##STR1## in which R and R.sub.1, independently, are substituted or unsubstituted C.sub.1-4 alkyl or are linked to form a ring, or