Patents by Inventor Piet T. Van Emmerik

Piet T. Van Emmerik 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).

  • Release films formed by coextrusion
    Patent number: 5700571
    Abstract: A release liner providing a release surface which comprises a first olefin polymer film formed having dispersed therein by high shear mixing a release substance which is polyethyleneimine octadecyl carbamide, polyvinyl octadecyl carbamate or a mixture thereof, coextruded or cocast onto a film formed from a second olefin polymer. The release liner has particular utility in diaper tape application.
    Type: Grant
    Filed: December 22, 1993
    Date of Patent: December 23, 1997
    Assignee: Avery Dennison Corporation
    Inventors: Daniel R. Logue, Piet T. Van Emmerik, Roger H. Mann, Edward I. Sun, Gary A. Avalon, Carol A. Caldwell, Eng-Pi Chang, Richard A. Huskey