Patents by Inventor Michael Repiscak

Michael Repiscak 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).

  • Process for controlled degradation of propylene polymers
    Patent number: 3940379
    Abstract: A process is provided for the degradation of propylene polymers comprising contacting a propylene polymer exhibiting a first melt flow rate with oxygen or an oxygen-containing gas and an organic or inorganic peroxide; melting and working and resulting mixture in a high shear zone thereby degrading said propylene polymer; and recovering an essentially odor free propylene polymer exhibiting a second melt flow rate higher than said first melt flow rate.
    Type: Grant
    Filed: May 21, 1973
    Date of Patent: February 24, 1976
    Assignee: Dart Industries, Inc.
    Inventors: Eugene G. Castagna, Albert Schrage, Michael Repiscak