Patents by Inventor Robert R. Maric

Robert R. Maric 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).

  • Coolant introduction in blow molding
    Patent number: 5052626
    Abstract: A more efficient cooling of a blow molded thermoplastic article can be achieved by directing sprays of cooling medium against those specific zones of the wall of the article which require a more rapid cooling while avoiding directing the sprays at areas requiring a less rapid cooling. This cooling procedure is achieved using a spray head having a plurality of individual spray nozzles which direct sprays specifically against the areas requiring more rapid cooling.
    Type: Grant
    Filed: July 6, 1990
    Date of Patent: October 1, 1991
    Assignee: Union Carbide Canada Limited
    Inventors: J. Robbin Wood, Robert R. Maric, Jack E. Hazell