Patents by Inventor John Parker Meyers

John Parker Meyers has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Use of lithium salts of anionic dyes to enhance their light-fastness
    Patent number: 6395885
    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.
    Type: Grant
    Filed: December 5, 2000
    Date of Patent: May 28, 2002
    Assignee: Avecia Limited
    Inventors: Aidan Joseph Lavery, Janette Watkinson, John Parker Meyers
  • Ink composition containing at least two azo dyes
    Patent number: 6251174
    Abstract: A composition comprising: (i) a dye of Formula (1) or a salt thereof:  wherein n is 0 or 1; and (ii) at least one dye selected from a dye of the Formula (2), (3), (4), (5), (6), (7) and salts thereof as defined in the description. Also claimed are the above compositions further comprising a water-soluble yellow dye and optionally a water-soluble cyan dye; inks containing the compositions; an ink jet printing process using the inks; and a substrate printed with the inks.
    Type: Grant
    Filed: December 23, 1999
    Date of Patent: June 26, 2001
    Assignee: Avecia Limited
    Inventors: Aidan Joseph Lavery, John Parker Meyers