Patents by Inventor Joseph Z. Pawlowski

Joseph Z. Pawlowski 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 eliminating surface melt fracture during extrusion of thermoplastic polymers
    Patent number: 4948543
    Abstract: A process for substantially eliminating surface melt fracture during extrusion of a thermoplastic polymer such as a molten narrow molecular weight distribution, linear, ethylene copolymer, by using a die having a die land region defining opposing surfaces at least one of which is coated with a composition containing about 80% to 99% nickel and about 1% to 20% phosphorous.
    Type: Grant
    Filed: June 15, 1989
    Date of Patent: August 14, 1990
    Assignee: Union Carbide Chemicals and Plastics Company, Inc.
    Inventors: Joseph Z. Pawlowski, Arakalgud V. Ramamurthy