Patents by Inventor Walter P. Scarberry

Walter P. Scarberry 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).

  • Coextrusion method and apparatus
    Patent number: 4432826
    Abstract: A coextruded film having an integral tear path is provided such that the tear path has a thickness that is smaller than the overall thickness of the coextruded film, said product being formed by a method and on an apparatus that introduces an elongated void in at least one of the extrudates before being combined with other extrudates into the coextruded film, said elongated void accounting for the reduced thickness of the tear path.
    Type: Grant
    Filed: July 26, 1982
    Date of Patent: February 21, 1984
    Assignee: Health-Ex Corporation
    Inventors: Walter P. Scarberry, Charles K. Vollman
  • Multiple ply coextrusion
    Patent number: 4353498
    Abstract: A coextruded film having an integral tear path is provided such that the tear path has a thickness that is smaller than the overall thickness of the coextruded film, said product being formed by a method and on an apparatus that introduces an elongated void in at least one of the extrudates before being combined with other extrudates into the coextruded film, said elongated void accounting for the reduced thickness of the tear path.
    Type: Grant
    Filed: January 5, 1981
    Date of Patent: October 12, 1982
    Assignee: Health-Ex Corporation
    Inventors: Walter P. Scarberry, Charles K. Vollman