Patents by Inventor Michele Shepard

Michele Shepard 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).

  • Low toxicity ink formulations with improved printhead lifetime
    Patent number: 10696855
    Abstract: An inkjet ink includes: (i) a disazo dye of formula (I): (ii) 1,3-propanediol; (iii) a glycol compound selected from the group consisting of: triethylene glycol and tetraethylene glycol; and (iv) water. The ink has low toxicity and is preferably absent ethylene glycol and sulfolane.
    Type: Grant
    Filed: March 22, 2018
    Date of Patent: June 30, 2020
    Assignee: Memjet Technology Limited
    Inventors: Jognandan Prashar, Iain Blake, Michele Shepard
  • LOW TOXICITY INK FORMULATIONS WITH IMPROVED PRINTHEAD LIFETIME
    Publication number: 20180298218
    Abstract: An inkjet ink includes: (i) a disazo dye of formula (I): (ii) 1,3-propanediol; (iii) a glycol compound selected from the group consisting of: triethylene glycol and tetraethylene glycol; and (iv) water. The ink has low toxicity and is preferably absent ethylene glycol and sulfolane.
    Type: Application
    Filed: March 22, 2018
    Publication date: October 18, 2018
    Inventors: Jognandan Prashar, Iain Blake, Michele Shepard
  • Ink formulations for improving printhead lifetime
    Patent number: 9725609
    Abstract: An inkjet ink includes: (i) a disazo dye of formula (I): (ii) a glycol compound selected from the group consisting of: triethylene glycol, tetraethylene glycol and pentaethylene glycol; and (iv) water.
    Type: Grant
    Filed: May 27, 2016
    Date of Patent: August 8, 2017
    Assignee: Memjet Technology Limited
    Inventors: Jognandan Prashar, Michele Shepard, Doreen Bali
  • Ink additive combinations for improving printhead lifetime
    Patent number: 9546292
    Abstract: An inkjet ink for improving printhead lifetimes includes: an aqueous-based ink vehicle; a colorant; an anti-kogation additive; and an anti-corrosion additive having at least one acetylenic group, the acetylenic group being absent any tertiary or quaternary ?-carbon atoms.
    Type: Grant
    Filed: October 7, 2015
    Date of Patent: January 17, 2017
    Assignee: Memjet Technology Limited
    Inventors: David Tyvoll, Simon Fielder, Michele Gimona, Christopher Barton, Jognandan Prashar, Michele Shepard, Iain Blake, Richard Myors, Luke Grassy
  • INK FORMULATIONS FOR IMPROVING PRINTHEAD LIFETIME
    Publication number: 20160272830
    Abstract: An inkjet ink includes: (i) a disazo dye of formula (I): (ii) a glycol compound selected from the group consisting of: triethylene glycol, tetraethylene glycol and pentaethylene glycol; and (iv) water.
    Type: Application
    Filed: May 27, 2016
    Publication date: September 22, 2016
    Inventors: Jognandan Prashar, Michele Shepard, Doreen Bali
  • Ink formulations for improving printhead lifetime
    Patent number: 9388317
    Abstract: An inkjet ink includes: (i) a disazo dye of formula (I): (ii) sulfolane; (iii) a glycol compound selected from the group consisting of: ethylene glycol, diethylene glycol, triethylene glycol, tetraethylene glycol and pentaethylene glycol; and (iv) water.
    Type: Grant
    Filed: March 6, 2015
    Date of Patent: July 12, 2016
    Assignee: Memjet Technology Limited
    Inventors: Jognandan Prashar, Michele Shepard, Doreen Bali
  • INK ADDITIVE COMBINATIONS FOR IMPROVING PRINTHEAD LIFETIME
    Publication number: 20160137861
    Abstract: An inkjet ink for improving printhead lifetimes includes: an aqueous-based ink vehicle; a colorant; an anti-kogation additive; and an anti-corrosion additive having at least one acetylenic group, the acetylenic group being absent any tertiary or quaternary ?-carbon atoms.
    Type: Application
    Filed: October 7, 2015
    Publication date: May 19, 2016
    Inventors: David Tyvoll, Simon Fielder, Michele Gimona, Christopher Barton, Jognandan Prashar, Michele Shepard, Iain Blake, Richard Myors, Luke Grassy
  • INK FORMULATIONS FOR IMPROVING PRINTHEAD LIFETIME
    Publication number: 20150274996
    Abstract: An inkjet ink includes: (i) a disazo dye of formula (I): (ii) sulfolane; (iii) a glycol compound selected from the group consisting of: ethylene glycol, diethylene glycol, triethylene glycol, tetraethylene glycol and pentaethylene glycol; and (iv) water.
    Type: Application
    Filed: March 6, 2015
    Publication date: October 1, 2015
    Inventors: Jognandan Prashar, Michele Shepard, Doreen Bali