Patents by Inventor Norman B. Kean

Norman B. Kean 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).

  • Melt-dispersible package for melt-processible polymers
    Patent number: 5110641
    Abstract: The subject invention provides a package for a heat seal sensitive polymer comprising a thermoplastic bag sealed at one end with a thermoplastic polymeric thread, both the thermoplastic bag material and the thermoplastic thread material having a melt temperature at or below the processing temperature of the heat seal sensitive polymer.
    Type: Grant
    Filed: December 14, 1990
    Date of Patent: May 5, 1992
    Assignee: E. I. du Pont de Nemours and Company
    Inventor: Norman B. Kean