Patents by Inventor Matthew Stewart Gebhart

Matthew Stewart Gebhart 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).

  • Aqueous polymer blend composition
    Patent number: 6930141
    Abstract: An aqueous polymer blend composition including a predominant amount of soft polymer particles and a minor amount of hard polymer particles is provided. The soft polymer particles contain, as copolymerized units, 70 to 99.7% by weight monoethylenically unsaturated (meth)acrylic monomer and from 0.3 to 10% by weight monoethylenically unsaturated acid monomer, based on weight of soft polymer particles. The soft polymer particles are made by a select process including redox polymerization or polymerization in the presence of excess unreacted monomer. The aqueous polymer blend composition is useful for preparing dry coatings having improved dirt pickup resistance and acceptable scrub resistance. A method is provided for preparing a dry coating from the aqueous polymer blend composition.
    Type: Grant
    Filed: April 9, 2003
    Date of Patent: August 16, 2005
    Assignee: Rohm and Haas Company
    Inventors: Matthew Stewart Gebhart, Deborah Gay Fradkin, Bonnie Elizabeth Baker, John Michael Friel, Steven Scott Edwards, Caren Ann Puschak, Cindy Eckert, Ralph Craig Even
  • Aqueous polymer blend composition
    Publication number: 20040010071
    Abstract: An aqueous polymer blend composition including a predominant amount of soft polymer particles and a minor amount of hard polymer particles is provided. The soft polymer particles contain, as copolymerized units, 70 to 99.7% by weight monoethylenically unsaturated (meth)acrylic monomer and from 0.3 to 10% by weight monoethylenically unsaturated acid monomer, based on weight of soft polymer particles. The soft polymer particles are made by a select process including redox polymerization or polymerization in the presence of excess unreacted monomer. The aqueous polymer blend composition is useful for preparing dry coatings having improved dirt pickup resistance and acceptable scrub resistance. A method is provided for preparing a dry coating from the aqueous polymer blend composition.
    Type: Application
    Filed: April 9, 2003
    Publication date: January 15, 2004
    Inventors: Matthew Stewart Gebhart, Deborah Gay Fradkin, Bonnie Elizabeth Baker, John Michael Friel, Steven Scott Edwards, Caren Ann Puschak, Cindy Eckert, Ralph Craig Even
  • Aqueous coating composition with improved adhesion to friable surfaces
    Patent number: 6663917
    Abstract: An aqueous coating composition having improved adhesion to friable surfaces is provided. The aqueous coating composition includes a plurality of polymeric particles having a particle size of less than 120 nanometers, and containing at least two polymers, one of which contains, as polymerized units, acid functional monomers, water soluble monomers, or both. Optionally, the aqueous coating composition includes a nonionic surfactant. In addition, a method for improving adhesion to friable surfaces by using the aqueous coating compositions of the invention is provided.
    Type: Grant
    Filed: November 21, 2002
    Date of Patent: December 16, 2003
    Assignee: Rohm and Haas Company
    Inventors: Matthew Stewart Gebhart, Kathleen Anne Koziski
  • Aqueous coating composition with improved adhesion to friable surfaces
    Publication number: 20030157258
    Abstract: An aqueous coating composition having improved adhesion to friable surfaces is provided. The aqueous coating composition includes a plurality of polymeric particles having a particle size of less than 120 nanometers, and containing at least two polymers, one of which contains, as polymerized units, acid functional monomers, water soluble monomers, or both. Optionally, the aqueous coating composition includes a nonionic surfactant. In addition, a method for improving adhesion to friable surfaces by using the aqueous coating compositions of the invention is provided.
    Type: Application
    Filed: November 21, 2002
    Publication date: August 21, 2003
    Inventors: Matthew Stewart Gebhart, Kathleen Anne Koziski
  • Aqueous coating composition with improved adhesion to friable surfaces
    Patent number: 6509064
    Abstract: An aqueous coating composition having improved adhesion to friable surfaces is provided. The aqueous coating composition includes a plurality of polymeric particles having a particle size of less than 120 nanometers, and containing at least two polymers, one of which contains, as polymerized units, acid functional monomers, water soluble monomers, or both. Optionally, the aqueous coating composition includes a nonionic surfactant. In addition, a method for improving adhesion to friable surfaces by using the aqueous coating compositions of the invention is provided.
    Type: Grant
    Filed: September 27, 2001
    Date of Patent: January 21, 2003
    Assignee: Rohm and Haas Company
    Inventors: Matthew Stewart Gebhart, Kathleen Anne Koziski
  • Aqueous coating composition with improved adhesion to friable surfaces
    Publication number: 20020064600
    Abstract: An aqueous coating composition having improved adhesion to friable surfaces is provided. The aqueous coating composition includes a plurality of polymeric particles having a particle size of less than 120 nanometers, and containing at least two polymers, one of which contains, as polymerized units, acid functional monomers, water soluble monomers, or both. Optionally, the aqueous coating composition includes a nonionic surfactant. In addition, a method for improving adhesion to friable surfaces by using the aqueous coating compositions of the invention is provided.
    Type: Application
    Filed: September 27, 2001
    Publication date: May 30, 2002
    Inventors: Matthew Stewart Gebhart, Kathleen Anne Koziski