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:
Dec. 13, 1977
Filed:
Nov. 15, 1976
Applicant:
Inventor:
Ernst E Schumacher, D6 Frankfurt am Main 1, DT;
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B41M / ; C09D / ;
U.S. Cl.
CPC ...
106 20 ; 101115 ; 101135 ; 101211 ; 106 22 ; 106 23 ;
Abstract
A novel set of basic printing inks for producing improved color tones in multicolor printing comprising four individual inks of golden-yellow, carmin, violet, and turquoise hues, respectively, and having predetermined spectral intervals between their maximum density wavelengths, the maximum density of each of the intermediate pair of colors being substantially equidistant from the middle of the visible color spectrum.