Patents by Inventor Kate Marritt Lusvardi

Kate Marritt Lusvardi 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).

  • Patent number: 9885155
    Abstract: A graft copolymer composition of a vinyl monomer and a functionalized vinylamine-containing base polymer and a method of preparing the graft copolymer. It also relates to a paper product made using the composition as a papermaking additive.
    Type: Grant
    Filed: April 10, 2015
    Date of Patent: February 6, 2018
    Assignee: Solenis Technologies, L.P.
    Inventors: Sachin Borkar, Qu-Ming Gu, Joseph M Mahoney, Kate Marritt Lusvardi, Mingxiang Luo
  • Patent number: 9879380
    Abstract: A method of improving dry strength and/or drainage of a paper or paperboard by adding to a paper or paperboard furnish, a graft copolymer composition of a vinyl monomer and a functionalized vinylamine-containing base polymer graft copolymer.
    Type: Grant
    Filed: March 2, 2017
    Date of Patent: January 30, 2018
    Assignee: Solenis Technologies, L.P.
    Inventors: Sachin Borkar, Qu-Ming Gu, Joseph M Mahoney, Kate Marritt Lusvardi, Mingxiang Luo
  • Patent number: 9873982
    Abstract: A method of increasing the drainage performance of a pulp slurry during the manufacture of paper products by adding (a) at least one microfibrillated cellulose and (b) at least one associative polymer or at least one branched or crosslinked copolymer to the pulp slurry. This addition occurs before the dewatering step where the pulp slurry is formed into a fibrous mat.
    Type: Grant
    Filed: October 12, 2015
    Date of Patent: January 23, 2018
    Assignee: Solenis Technologies, L.P.
    Inventors: John C. Harrington, Kate Marritt Lusvardi, Fushan Zhang
  • Patent number: 9783933
    Abstract: Provided is a method of making paper and paperboard. In particular graft copolymers of vinyl monomers and functionalized vinylamine-containing base polymers by Michael addition are added to a paper furnish. The composition can be used alone or in combination with other additives for use in paper making and to improve paper making processes such as paper dry and wet strength properties.
    Type: Grant
    Filed: May 13, 2016
    Date of Patent: October 10, 2017
    Assignee: Solenis Technologies, L.P.
    Inventors: Sachin Borkar, Qu-Ming Gu, Joseph M Mahoney, Kate Marritt Lusvardi, Mingxiang Luo, Richard Riehle
  • Publication number: 20170233949
    Abstract: A method of improving dry strength and/or drainage of a paper or paperboard by adding to a paper or paperboard furnish, a graft copolymer composition of a vinyl monomer and a functionalized vinylamine-containing base polymer graft copolymer.
    Type: Application
    Filed: March 2, 2017
    Publication date: August 17, 2017
    Inventors: Sachin Borkar, Qu-Ming Gu, Joseph M. Mahoney, Kate Marritt Lusvardi, Mingxiang Luo
  • Publication number: 20170101740
    Abstract: A method of increasing the drainage performance of a pulp slurry during the manufacture of paper products by adding (a) at least one microfibrillated cellulose and (b) at least one associative polymer or at least one branched or crosslinked copolymer to the pulp slurry. This addition occurs before the dewatering step where the pulp slurry is formed into a fibrous mat.
    Type: Application
    Filed: October 12, 2015
    Publication date: April 13, 2017
    Applicants: Solenis Technologies, L.P., UPM-Kymmene Corporation
    Inventors: John C. HARRINGTON, Kate Marritt LUSVARDI, Fushan ZHANG
  • Publication number: 20160298297
    Abstract: Provided is a method of making paper and paperboard. In particular graft copolymers of vinyl monomers and functionalized vinylamine-containing base polymers by Michael addition are added to a paper furnish.
    Type: Application
    Filed: May 13, 2016
    Publication date: October 13, 2016
    Inventors: Sachin Borkar, Qu-Ming Gu, Joseph M. Mahoney, Kate Marritt Lusvardi, Mingxiang Luo, Richard Riehle
  • Publication number: 20150299961
    Abstract: A graft copolymer composition of a vinyl monomer and a functionalized vinylamine-containing base polymer and a method of preparing the graft copolymer. It also relates to a paper product made using the composition as a papermaking additive.
    Type: Application
    Filed: April 10, 2015
    Publication date: October 22, 2015
    Inventors: Sachin Borkar, Qu-Ming Gu, Joseph M. Mahoney, Kate Marritt Lusvardi, Mingxiang Luo
  • Patent number: 6602994
    Abstract: A method for producing derivatized microfibrillar polysaccharide, including but not limited to cellulose, derivatized by steric and/or electrostatic forces, where the electrostatic forces are provided by anionic charge or by a combination of both anionic and cationic charge, by stabilizing and/or microfibrillating a polysaccharide starting material. A method of modifying the rheological properties of a composition of matter using derivatized microfibrillar polysaccharide. Method of improving coatings, paper manufacture, and the stability of emulsions, dispersions, and foams using a derivatized microfibrillar polysaccharide. Compositions that include derivatized microfibrillar polysaccharide, including paper compositions, comestible compositions, non-comestible spreadable compositions, and emulsions, dispersion, and foams.
    Type: Grant
    Filed: February 10, 1999
    Date of Patent: August 5, 2003
    Assignee: Hercules Incorporated
    Inventors: Mary Jean Cash, Anita N. Chan, Herbert Thompson Conner, Patrick Joseph Cowan, Robert Alan Gelman, Kate Marritt Lusvardi, Samuel Anthony Thompson, Frank Peine Tise