Patents by Inventor Pieter Willem Provo Kluit

Pieter Willem Provo Kluit 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).

  • Method of making a foamable film
    Patent number: 5733488
    Abstract: The present invention is directed to a method of making a foamable film of at least one thermoplastic resin with at least one liquid blowing agent incorporated therein, said method comprising forming the thermoplastic resin and a liquid swelling agent for the thermoplastic resin into a layer, contacting the said layer with the liquid blowing agent and replacing at least part of the swelling agent in the resin by the liquid blowing agent.
    Type: Grant
    Filed: June 24, 1996
    Date of Patent: March 31, 1998
    Assignee: Tsutsunaka Plastic Industry Co., Ltd.
    Inventors: Pieter Willem Provo Kluit, Adriaan Beukers