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:
May. 28, 2002
Filed:
Dec. 05, 2000
Applicant:
Inventors:
Aidan Joseph Lavery, High Wycombe, GB;
Janette Watkinson, Blackley, GB;
John Parker Meyers, New Castle, DE (US);
Assignee:
Avecia Limited, Blackley, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09B 6/902 ; C09B 6/724 ; C09D 1/102 ;
U.S. Cl.
CPC ...
C09B 6/902 ; C09B 6/724 ; C09D 1/102 ;
Abstract
The use of lithium as a cation for an anionic dye to enhance the light-fastness of the dye. Also claimed are the lithium salts of certain anionic dyes as defined in the description; mixed lithium/sodium salts of an anionic dye wherein the molar ratio of lithium to sodium is from 1:4 to 99:1 and at least 20 mole % of the total counter ions in the dye are lithium cations; inks containing the dyes; a method of ink jet printing using the inks; a substrate printed with the inks; an ink jet printer cartridge containing the ink and a ink jet printer containing the ink jet printer cartridge.