Patents by Inventor Frank T. Kitchel

Frank T. Kitchel 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).

  • Clarity of low density polyethylene compositions containing anti-block agents by addition of polyethylene glycol (II)
    Patent number: 4784822
    Abstract: A method is disclosed for improving the clarity of polyethylene film containing silica or diatomaceous earth as an anti-blocking agent. The method comprises treating the anti-blocking agent with polyethylene glycol such that sufficient polyethylene glycol is deposited on said anti-blocking agents such that at least 10 parts per million of polyethylene glycol is present in the final blend. Next, the treated anti-blocking agent is added to the polyethylene resin and this blend is formed into a film.
    Type: Grant
    Filed: December 10, 1986
    Date of Patent: November 15, 1988
    Assignee: Enron Chemical Company
    Inventors: Frank T. Kitchel, R. Sven Solvik, Michael L. Opacich
  • Clarity of low density polyethylene compositions containing anti-block agents by addition of polyethylene glycol
    Patent number: 4629749
    Abstract: A method is disclosed for improving the clarity of polyethylene film containing silica or diatomaceous earth as an anti-blocking agent. The method comprises treating the anti-blocking agent with polyethylene glycol such that sufficient polyethylene glycol is deposited on said anti-blocking agents so that the weight ratio of said polyethylene glycol to said anti-blocking agent is at least about 1:30. Next, the treated anti-blocking agent is added to the polyethylene resin and this blend is formed into a film.
    Type: Grant
    Filed: July 24, 1985
    Date of Patent: December 16, 1986
    Assignee: Enron Chemical Company
    Inventors: Frank T. Kitchel, R. Sven Solvik, Michael L. Opacich