Patent · US Active

Black inkjet ink

US7806969B2 · kind B2 · utility

0Cited by

1References

7Claims

0Family size

Assignee

E.I. DU PONT DE NEMOURS AND COMPANY · US

Inventors

Jose Esteban Valentini · West Chester, US
Kuo Hsiung Kung · Wilmington, US
James A. Silver · Kennett Square, US
William T. Hall · Wilmington, US

Key dates

Filing date	Jul 29, 2009
Grant date	Oct 5, 2010
Priority date	—
Expiry date	Jul 29, 2029

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC09D11/328
WIPO fieldBasic materials chemistry
WIPO sectorChemistry

Abstract

The present invention pertains to an aqueous-based black inkjet ink comprising a mixture of Direct Black 168, Acid Blue 290 and a certain magenta dye. The ink exhibits good color neutrality and gray scale.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.