Patents by Inventor Paul J. Drenzek

Paul J. Drenzek 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).

  • Transparent thermoplastic composition
    Patent number: 5973074
    Abstract: A thermoplastic molding composition having a light transmission value of at least 40% is disclosed. The composition contains a thermoplastic polyurethane component, a styrene copolymer, and an alkyl(meth)acrylate component and is characterized by the compatibility of its components. The weight ratio between the styrene copolymer to the sum of the styrene copolymer and alkyl(meth)acrylate components was found to be critical to the light transmission of the inventive composition.
    Type: Grant
    Filed: September 2, 1998
    Date of Patent: October 26, 1999
    Assignee: Bayer Corporation
    Inventors: Joseph O. Campbell, Eric K. Yeh, Russell P. Wong, Paul J. Drenzek
  • HCFC resistant ABS composite
    Patent number: 5409774
    Abstract: Disclosed herein is a composite structure comprising a layer of a gas filled cellular insulation material combined with a layer of impact resistant thermoplastic sheet material wherein an ABS sheet having a substantial number of rubber particles in range of from about 4 to about 10 microns (LR ABS) is interposed between the gas filled cellular material and the thermoplastic sheet.
    Type: Grant
    Filed: July 1, 1993
    Date of Patent: April 25, 1995
    Assignee: Monsanto Company
    Inventors: Craig W. Pehlert, Paul J. Drenzek, Glenn B. Hilton
  • Transparent polyblends
    Patent number: 4083896
    Abstract: The polyblend comprises: (A) a graft copolymer having superstrate copolymers of monovinylidene aromatic and ethylenically unsaturated nitrile monomers and a substrate of a diene rubber dispersed in a matrix phase (B) comprising a blend of about 45 to 75 percent by weight of a (I) copolymer of monovinylidene aromatic and ethylenically unsaturated nitrile monomers and about 25 to 55 percent by weight (II) a methylmethacrylate polymer.
    Type: Grant
    Filed: July 22, 1976
    Date of Patent: April 11, 1978
    Assignee: Monsanto Company
    Inventors: James R. Moran, Paul J. Drenzek