Patents by Inventor Jack E. Knott

Jack E. Knott 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).

  • Patent number: 5091262
    Abstract: A starch filled, coextruded degradable polyethylene film includes a starch filled inner layer positioned between two outer layers that contain a prodegradant. The outer layers of the film, which contain no starch, enable the film to retain desirable physical properties similar to conventional polyethylene film. The prodegradant causes the outer layers of the film to degrade under appropriate conditions exposing the starch filled inner layer. The starch in the inner layer then serves as a source of nutrients for microorganisms which consume starch, leaving a porous structure that is vulnerable to oxidation, hydrolysis, direct enzyme action or combinations of these processes.
    Type: Grant
    Filed: August 27, 1990
    Date of Patent: February 25, 1992
    Assignee: Rexene Products Company
    Inventors: Jack E. Knott, Paul D. Gage