Patents by Inventor David Hartsock

David Hartsock 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).

  • Binary and ternary blends comprising monovinylarene/conjugated diene block copolymers and monovinylarene/alkyl (meth)acrylate copolymers
    Patent number: 7193014
    Abstract: We disclose compositions, comprising (i) from about 25 parts by weight to about 95 parts by weight of a monovinylarene-conjugated diene coupled block copolymer comprising at least one tapered block, having a blocky monovinylarene content of less than 90 wt % of total monovinylarene units, and comprising a terminal monovinylarene block having a molecular weight of less than 60,000 g/mol; and (ii) from about 5 parts by weight to about 75 parts by weight of a monovinylarene-alkyl(meth)acrylate copolymer, comprising (ii-a) monovinylarene units and (ii-b) either alkyl acrylate units, alkyl methacrylate units, or both. The compositions can be used in shrink film or rigid packaging applications.
    Type: Grant
    Filed: February 20, 2004
    Date of Patent: March 20, 2007
    Assignee: Chevron Phillips Chemical Company, LP
    Inventors: John D. Wilkey, Carleton E. Stouffer, Vergil H. Rhodes, Jay M. Chaffin, John M. Brown, David Hartsock, James A. Keane
  • Composition for monovinylrenic-based shrink label films
    Publication number: 20060089457
    Abstract: We disclose a composition comprising (i) a monovinylarene-conjugated diene copolymer and (ii) an acrylate terpolymer. The composition can be in the form of a film. We also disclose a container comprising a container structure and a shrink label in contact with the container structure's exterior surface. We also disclose a method of applying a shrink label to a container structure.
    Type: Application
    Filed: October 27, 2004
    Publication date: April 27, 2006
    Applicant: Chevron Phillips Chemical Company, LP
    Inventors: David Hartsock, John Brown, James Keane
  • Binary and ternary blends comprising monovinylarene/conjugated diene block copolymers and monovinylarene/alkyl (meth)acrylate copolymers
    Publication number: 20050187344
    Abstract: We disclose compositions, comprising (i) from about 25 parts by weight to about 95 parts by weight of a monovinylarene-conjugated diene coupled block copolymer comprising at least one tapered block, having a blocky monovinylarene content of less than 90 wt % of total monovinylarene units, and comprising a terminal monovinylarene block having a molecular weight of less than 60,000 g/mol; and (ii) from about 5 parts by weight to about 75 parts by weight of a monovinylarene-alkyl(meth)acrylate copolymer, comprising (ii-a) monovinylarene units and (ii-b) either alkyl acrylate units, alkyl methacrylate units, or both. The compositions can be used in shrink film or rigid packaging applications.
    Type: Application
    Filed: February 20, 2004
    Publication date: August 25, 2005
    Inventors: John Wilkey, Carleton Stouffer, Vergil Rhodes, Jay Chaffin, John Brown, David Hartsock, James Keane