Patents by Inventor Kevin Rattigan

Kevin Rattigan 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).

  • Ink composition
    Patent number: 10472531
    Abstract: The present disclosure relates to an ink composition containing a colorant; a hydroxylated co-solvent; a non-hydroxylated co-solvent, a polyurethane binder and water. The weight percent ratio of the hydroxylated co-solvent to the non-hydroxylated co-solvent in the ink composition ranges from 55:45 to 65:35; and the total amount of hydroxylated co-solvent and non-hydroxylated co-solvent in the ink composition is at least 18 wt %. The amount of polyurethane binder in the ink composition is 0.1 to less than 1 wt %.
    Type: Grant
    Filed: July 20, 2015
    Date of Patent: November 12, 2019
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Linda Sherry, Niamh Kelly, Richard J. McManus, Kevin Rattigan, John Breen
  • Magenta inks
    Patent number: 10414930
    Abstract: The present disclosure relates to magenta inkjet inks having a quinacridone pigment and an azo pigment. The azo pigment has at least one azo compound having the formula (I), in which Ra is selected from H, aryl and C1 to C4 alkyl, and Rb, Rc and Rd are each independently selected from H, a C1 to C4 alkyl, an oxygen-containing, a nitrogen-containing and a sulphur-containing functional group. Where Ra is aryl, the aryl is not a phenyl group having at least one hydrogen atom that has been substituted with a chlorine atom.
    Type: Grant
    Filed: January 10, 2014
    Date of Patent: September 17, 2019
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Keshava A. Prasad, Dennis Z. Guo, Niamh Kelly, Kenneth Hickey, Kevin Rattigan, Claire Harley
  • INK COMPOSITION
    Publication number: 20180094151
    Abstract: The present disclosure relates to an ink composition containing a colorant; a hydroxylated co-solvent; a non-hydroxylated co-solvent, a polyurethane binder and water. The weight percent ratio of the hydroxylated co-solvent to the non-hydroxylated co-solvent in the ink composition ranges from 55:45 to 65:35; and the total amount of hydroxylated co-solvent and non-hydroxylated co-solvent in the ink composition is at least 18 wt %. The amount of polyurethane binder in the ink composition is 0.1 to less than 1 wt %.
    Type: Application
    Filed: July 20, 2015
    Publication date: April 5, 2018
    Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
    Inventors: Linda SHERRY, Niamh KELLY, Richard J. MCMANUS, Kevin RATTIGAN, John BREEN
  • MAGENTA INKS
    Publication number: 20170022383
    Abstract: The present disclosure relates to magenta inkjet inks having a quinacridone pigment and an azo pigment. The azo pigment has at least one azo compound having the formula (I), in which Ra is selected from H, aryl and C1 to C4 alkyl, and Rb, Rc and Rd are each independently selected from H, a C1 to C4 alkyl, an oxygen-containing, a nitrogen-containing and a sulphur-containing functional group. Where Ra is aryl, the aryl is not a phenyl group having at least one hydrogen atom that has been substituted with a chlorine atom.
    Type: Application
    Filed: January 10, 2014
    Publication date: January 26, 2017
    Applicant: Hewlett-Packard Development Company, L.P.
    Inventors: Keshava A. Prasad, Dennis Z. Guo, Niamh Kelly, Kenneth Hickey, Kevin Rattigan, Claire Harley