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:
Jun. 15, 1976
Filed:
Nov. 01, 1974
Applicant:
Inventors:
Gunter Osswald, Grossauheim, DT;
Josef Reus, Freigericht, DT;
Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C09C / ; C09C / ;
U.S. Cl.
CPC ...
106289 ; 106307 ;
Abstract
Carbon black toned with lake forming organic dyes are produced by dispersing the carbon black in an aqueous solution of the dye and the laking agent, for example aluminum sulfate, the dispersion subsequently mixed with stirring with the lake forming agent sodium water glass, the laking being then completed by adding sodium molybdate and the toned carbon black dried after separation of the liquid phase.