Patents by Inventor Keith G. Saunders

Keith G. Saunders 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: 7196137
    Abstract: The invention is based on the discovery of useful combinations of fully cross-linked thermoplastic vulcanizates with styrenic block copolymers. The new combinations of the invention can provide a synergistic effect. Specifically, the compositions formed thereby can be both softer and more elastic than would be expected on the basis of the properties of the individual components. Such compositions can be used in numerous applications, including, for example, any application for which a soft material with very good recovery is desired.
    Type: Grant
    Filed: February 8, 2002
    Date of Patent: March 27, 2007
    Assignee: Teknor Apex Company
    Inventors: Tonya M. McBride, Raman Patel, Wayne Thornton, Keith G. Saunders, Dexi Weng
  • Patent number: 6608142
    Abstract: Compositions of a polyvinyl chloride resin, a polyolefin which is the metallocene-catalyzed reaction product of ethylene and an alpha-olefin monomer, and a component selected from the group consisting of chlorinated polyethylene, polycaprolactone, and combinations thereof are disclosed. The compositions are essentially free of liquid plasticizers, and prossess good mechanical properties of tensile strength, elongation, and a low brittle point, even after being subjected to high heat for an extended period of time.
    Type: Grant
    Filed: May 8, 2000
    Date of Patent: August 19, 2003
    Assignee: Teknor Apex Company
    Inventors: Dexi Weng, John Andries, Keith G. Saunders, Robert S. Brookman
  • Publication number: 20030153680
    Abstract: The invention is based on the discovery of useful combinations of fully cross-linked thermoplastic vulcanizates with styrenic block copolymers. The new combinations of the invention can provide a synergistic effect. Specifically, the compositions formed thereby can be both softer and more elastic than would be expected on the basis of the properties of the individual components. Such compositions can be used in numerous applications, including, for example, any application for which a soft material with very good recovery is desired.
    Type: Application
    Filed: February 8, 2002
    Publication date: August 14, 2003
    Inventors: Tonya M. McBride, Raman Patel, Wayne Thornton, Keith G. Saunders, Dexi Weng
  • Patent number: 6417260
    Abstract: Compositions of a plasticized polyvinyl chloride resin, a polyolefin and/or a styrenic polymer, and a compatibilizer are disclosed. The compositions retain the mechanical properties of tensile strength, elongation, and a low brittle point, even after being subjected to high heat for an extended period of time.
    Type: Grant
    Filed: March 28, 2000
    Date of Patent: July 9, 2002
    Assignee: Teknor Apex Company
    Inventors: Dexi Weng, John C. Andries, Keith G. Saunders
  • Patent number: 6271301
    Abstract: Thermoplastic elastomers including a polyvinyl chloride and a nitrile rubber additive are disclosed. The nitrile rubber additive can be crosslinked and/or essentially free of plasticizer. The thermoplastic elastomers can include additional materials, such a copolyester and/or a plasticizer. The thermoplastic elastomers can be soft, elastomeric and/or oil resistant. The thermoplastic elastomers can have good low temperature properties. The thermoplastic elastomers can have good flame retardant, smoke suppressant and/or char forming properties.
    Type: Grant
    Filed: June 22, 1998
    Date of Patent: August 7, 2001
    Assignee: Teknor Apex Company
    Inventors: Dexi Weng, John C. Andries, Keith G. Saunders
  • Patent number: 6063846
    Abstract: Compositions of a plasticized polyvinyl chloride resin, a polyolefin and/or a styrenic polymer, and a compatibilizer are disclosed. The compositions retain the mechanical properties of tensile strength, elongation, and a low brittle point, even after being subjected to high heat for an extended period of time.
    Type: Grant
    Filed: May 30, 1997
    Date of Patent: May 16, 2000
    Assignee: Teknor Apex Company
    Inventors: Dexi Weng, John C. Andries, Keith G. Saunders
  • Patent number: 4738990
    Abstract: Disclosed is a process for the preparation of a polyamideimide semi-flexible foam wherein a foam precursor is first prepared by heating together a mixture of an organic polyisocyanate, an aromatic polycarboxylic compound and a catalyst comprising a cyclic phosphorus compound, optionally in the presence of a surfactant until at least about 45 percent of the theoretical carbon dioxide has been evolved. The solidified precursor is comminuted and then heated to complete the reaction producing polyamideimide foam.
    Type: Grant
    Filed: August 31, 1987
    Date of Patent: April 19, 1988
    Assignee: The Dow Chemical Company
    Inventors: Robert G. Nelb, II, Keith G. Saunders
  • Patent number: 4579914
    Abstract: Disclosed are novel blends comprising segmented polyesteramides with minor amounts of aliphatic polyamides.The blends are characterized by good physical properties including improved elongation and solvent resistance over the base polyesteramides. The polymers so obtained find utility in the making of seals, gaskets, bushings, and the like.
    Type: Grant
    Filed: March 18, 1985
    Date of Patent: April 1, 1986
    Assignee: The Dow Chemical Company
    Inventors: Robert G. Nelb, II, Kemal Onder, Keith G. Saunders