Patents by Inventor Don H. Johns

Don H. Johns 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).

  • Method of making composite polyolefin based containers
    Patent number: 4426347
    Abstract: A polyolefin container having improved gas barrier properties is fabricated from particles of a solid material having low permeability to gases, the solid material being coated with an olefin polymer by polymerizing an olefin monomer in the presence of the solid material.
    Type: Grant
    Filed: April 6, 1981
    Date of Patent: January 17, 1984
    Inventors: Stephen W. Cornell, Don H. Johns