Patents by Inventor LeRoy Herbert Keiser

LeRoy Herbert Keiser 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).

  • Structured polyolefin coated substrates and processes for making the same
    Patent number: 6893707
    Abstract: Structured polyolefin coated substrates and processes for making the same are disclosed. A chill roll is used to impart a plurality of peaks which protrude outwardly from the polyolefin coating of the structured substrate. In addition, the chill roll surface is treated to impart a matte finish and thus to transfer a matte finish to the area surrounding the peaks of the polyolefin coating.
    Type: Grant
    Filed: November 18, 2002
    Date of Patent: May 17, 2005
    Assignee: Loparex, Inc.
    Inventors: LeRoy Herbert Keiser, Kurt Henry Mather
  • Structured polyolefin coated substrates and processes for making the same
    Publication number: 20030091791
    Abstract: Structured polyolefin coated substrates and processes for making the same are disclosed. A chill roll is used to impart a plurality of peaks which protrude outwardly from the polyolefin coating of the structured substrate. In addition, the chill roll surface is treated to impart a matte finish and thus to transfer a matte finish to the area surrounding the peaks of the polyolefin coating.
    Type: Application
    Filed: November 18, 2002
    Publication date: May 15, 2003
    Inventors: LeRoy Herbert Keiser, Kurt Henry Mather
  • Multilayered film structures and methods of making and using the same
    Patent number: 6521312
    Abstract: Cost effective film laminates having desirable stiffness and processes for making the same are disclosed. The laminates include outer layers formed from one or more films having superior flexural modulus properties sandwiching a thicker yet less stiff polyolefin layer. The multilayered structures are suitable for use in applications which typically require a single heavy gauge film having a high degree of stiffness, such as release liners and the like.
    Type: Grant
    Filed: November 28, 2000
    Date of Patent: February 18, 2003
    Assignee: Loparex, Inc.
    Inventor: LeRoy Herbert Keiser
  • Laminates including cellulosic materials and processes for making and usng the same
    Publication number: 20020176973
    Abstract: Laminates including cellulosic material are provided which exhibit dimensional stability upon exposure to changes in ambient moisture. The laminates include at least two layers formed of a cellulosic material sandwiching and bonded to an inner polymeric layer. The polymer layer is thicker than either of the cellulosic layers.
    Type: Application
    Filed: May 23, 2001
    Publication date: November 28, 2002
    Applicant: Loparex, Inc.
    Inventor: LeRoy Herbert Keiser