Patents by Inventor William David Kappele

William David Kappele 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 compositions
    Patent number: 6538049
    Abstract: The invention relates to an aqueous ink composition for use in ink jet printers comprising an aqueous carrier, a colorant, a polymeric dispersant, and a specific cosolvent mixture comprising C2-C8 terminal alkanediols with a second component selected from polyethylene glycol-type materials and polyol/alkylene oxide condensates. The ink compositions demonstrate excellent stability, good maintenance characteristics for the printers in which they are used, and excellent optical density and print characteristics.
    Type: Grant
    Filed: May 21, 1997
    Date of Patent: March 25, 2003
    Assignee: Lexmark International, Inc.
    Inventors: William David Kappele, Anna Marie Pearson
  • Pigment-based ink compositions
    Patent number: 6174357
    Abstract: An ink composition comprises red pigment and a carrier mixture. The carrier mixture comprises a bishydroxy terminated thioether and a lactam.
    Type: Grant
    Filed: July 20, 1999
    Date of Patent: January 16, 2001
    Assignee: Lexmark International, Inc.
    Inventor: William David Kappele
  • Wet-rub resistant ink compositions
    Patent number: 6063834
    Abstract: Wet-rub resistant ink compositions are described and the ink compositions have a binder material or binder composition which may be prepared from monomeric precursors which include vinyl halides, acrylates, alkylol amides and urethanes.
    Type: Grant
    Filed: December 8, 1997
    Date of Patent: May 16, 2000
    Assignee: Lexmark International, Inc.
    Inventors: William David Kappele, Anna Marie Pearson, Ajay Kanubhalsuthar
  • High performance ink compositions with non-benzidine based colorants
    Patent number: 5994427
    Abstract: High performance ink compositions are described and the ink compositions have a novel colorant set which includes a quinacridone, a phthalocyanine and a monoazo compound, and no benzidine based colorants.
    Type: Grant
    Filed: November 19, 1997
    Date of Patent: November 30, 1999
    Assignee: Lexmark International, Inc.
    Inventors: William David Kappele, Anna Marie Pearson
  • High performance ink compositions
    Patent number: 5925692
    Abstract: High performance ink compositions are described and the ink compositions comprise oxycarbons like glycols as well as bishydroxy terminated thioethers like 2,2'-thiodiethanol.
    Type: Grant
    Filed: March 12, 1997
    Date of Patent: July 20, 1999
    Assignee: Lexmark International, Inc.
    Inventors: William David Kappele, James Michael Mrvos, Ajay Kanubhai Suthar
  • Ink compositions
    Patent number: 5656071
    Abstract: The invention relates to an aqueous ink composition for use in ink jet printers comprising an aqueous carrier, an insoluble pigment, a polymeric dispersant, and a specific cosolvent mixture comprising 1,3-propanediol or 1,4-butanediol with a second component selected from polyethylene glycol-type materials and polyol/alkylene oxide condensates. The ink compositions demonstrate excellent stability, good maintenance characteristics for the printers in which they are used, and excellent optical density and print characteristics.
    Type: Grant
    Filed: June 20, 1996
    Date of Patent: August 12, 1997
    Assignee: Lexmark International, Inc.
    Inventors: William David Kappele, Anna Marie Pearson