Patents by Inventor Katharine Louise Pearce

Katharine Louise Pearce 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: 7273916
    Abstract: A cross-linkable and cross-linked organosilicon polymer which is prepared from a mixture of a reactive polysiloxane resin having both reactive carbon-carbon double bonds and silicone-hydrogen groups, characterized by alternating structures of polycyclic polyene residue and cyclic (or tetrahedral) polysiloxane residue, and either vinyl terminated fluorine-containing polysiloxane or vinyl terminated phenyl-substituted siloxane. In an alternative embodiment, the polymer comprises a mixture of vinyl terminated phenyl-substituted polysiloxane and vinyl functional fluorosilicone elastomer with the cross-linkable and cross linked organosilicon polymer.
    Type: Grant
    Filed: July 29, 2004
    Date of Patent: September 25, 2007
    Assignee: National Starch and Chemical Investment Holding Corporation
    Inventors: Elizabeth M. Walker, Jiazhong Luo, Rose Ann Schultz, Katharine Louise Pearce
  • Patent number: 7241852
    Abstract: A cross-linkable and cross-linked organosilicon polymer which is prepared from a mixture of a reactive polysiloxane resin having both reactive carbon-carbon double bonds and silicone-hydrogen groups, characterized by alternating structures of polycyclic polyene residue and cyclic (or tetrahedral) polysiloxane residue, and either vinyl terminated fluorine-containing polysiloxane or vinyl terminated phenyl-substituted siloxane. In an alternative embodiment, the polymer comprises a mixture of vinyl terminated phenyl-substituted polysiloxane and vinyl functional fluorosilicone elastomer with the cross-linkable and cross linked organosilicon polymer.
    Type: Grant
    Filed: July 29, 2004
    Date of Patent: July 10, 2007
    Assignee: National Starch and Chemical Investment Holding Corporation
    Inventors: Elizabeth M. Walker, Jiazhong Luo, Rose Ann Schultz, Katharine Louise Pearce
  • Patent number: 7199206
    Abstract: A cross-linkable and cross-linked organosilicon polymer which is prepared from a mixture of a reactive polysiloxane resin having both reactive carbon-carbon double bonds and silicone-hydrogen groups, characterized by alternating structures of polycyclic polyene residue and cyclic (or tetrahedral) polysiloxane residue, and either vinyl terminated fluorine-containing polysiloxane or vinyl terminated phenyl-substituted siloxane. In an alternative embodiment, the polymer comprises a mixture of vinyl terminated phenyl-substituted polysiloxane and vinyl functional fluorosilicone elastomer with the cross-linkable and cross linked organosilicon polymer. In an alternative embodiment, the polymer comprises vinyl functional polydimethyl siloxane, and preferably high molecular weight methyl divinyl siloxane, with or without phenyl substituted siloxane.
    Type: Grant
    Filed: January 8, 2004
    Date of Patent: April 3, 2007
    Assignee: National Starch and Chemical Investment Holding Corporation
    Inventors: Elizabeth M. Walker, Susan Krawiec, Jiazhong Luo, Roseann Schultz, Katharine Louise Pearce
  • Patent number: 6841647
    Abstract: A cross-linkable and cross-linked organosilicon polymer which is prepared from a mixture of a reactive polysiloxane resin having both reactive carbon-carbon double bonds and silicone-hydrogen groups, characterized by alternating structures of polycyclic polyene residue and cyclic (or tetrahedral) polysiloxane residue, and either vinyl terminated fluorine-containing polysiloxane or vinyl terminated phenyl-substituted siloxane. In an alternative embodiment, the polymer comprises a mixture of vinyl terminated phenyl-substituted polysiloxane and vinyl functional fluorosilicone elastomer with the cross-linkable and cross linked organosilicon polymer.
    Type: Grant
    Filed: November 6, 2001
    Date of Patent: January 11, 2005
    Assignee: National Starch and Chemical Investment Holding Corporation
    Inventors: Elizabeth M. Walker, Jiazhong Luo, Rose Ann Schultz, Katharine Louise Pearce
  • Publication number: 20040266945
    Abstract: A cross-linkable and cross-linked organosilicon polymer which is prepared from a mixture of a reactive polysiloxane resin having both reactive carbon-carbon double bonds and silicone-hydrogen groups, characterized by alternating structures of polycyclic polyene residue and cyclic (or tetrahedral) polysiloxane residue, and either vinyl terminated fluorine-containing polysiloxane or vinyl terminated phenyl-substituted siloxane. In an alternative embodiment, the polymer comprises a mixture of vinyl terminated phenyl-substituted polysiloxane and vinyl functional fluorosilicone elastomer with the cross-linkable and cross linked organosilicon polymer.
    Type: Application
    Filed: July 29, 2004
    Publication date: December 30, 2004
    Inventors: Elizabeth M. Walker, Jiazhong Luo, Rose Ann Schultz, Katharine Louise Pearce
  • Publication number: 20040192874
    Abstract: A cross-linkable and cross-linked organosilicon polymer which is prepared from a mixture of a reactive polysiloxane resin having both reactive carbon-carbon double bonds and silicone-hydrogen groups, characterized by alternating structures of polycyclic polyene residue and cyclic (or tetrahedral) polysiloxane residue, and either vinyl terminated fluorine-containing polysiloxane or vinyl terminated phenyl-substituted siloxane. In an alternative embodiment, the polymer comprises a mixture of vinyl terminated phenyl-substituted polysiloxane and vinyl functional fluorosilicone elastomer with the cross-linkable and cross linked organosilicon polymer. In an alternative embodiment, the polymer comprises vinyl functional polydimethyl siloxane, and preferably high molecular weight methyl divinyl siloxane, with or without phenyl substituted siloxane.
    Type: Application
    Filed: January 8, 2004
    Publication date: September 30, 2004
    Inventors: Elizabeth M. Walker, Susan Krawiec, Jiazhong Luo, Roseann Schultz, Katharine Louise Pearce
  • Publication number: 20030187153
    Abstract: A cross-linkable and cross-linked organosilicon polymer which is prepared from a mixture of a reactive polysiloxane resin having both reactive carbon-carbon double bonds and silicone-hydrogen groups, characterized by alternating structures of polycyclic polyene residue and cyclic (or tetrahedral) polysiloxane residue, and either vinyl terminated fluorine-containing polysiloxane or vinyl terminated phenyl-substituted siloxane. In an alternative embodiment, the polymer comprises a mixture of vinyl terminated phenyl-substituted polysiloxane and vinyl functional fluorosilicone elastomer with the cross-linkable and cross linked organosilicon polymer.
    Type: Application
    Filed: November 6, 2001
    Publication date: October 2, 2003
    Inventors: Elizabeth M. Walker, Jiazhong Luo, Rose Ann Schultz, Katharine Louise Pearce