Patents by Inventor William P. Kremkau

William P. Kremkau 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).

  • Film laminates having a reirradiated layer
    Patent number: 4044187
    Abstract: The seal strength, dimensional stability, bond strength between plies, and ink adhesion of certain film laminates may be significantly increased by irradiating the substrate, forming the laminate, and then irradiating the entire laminate whereas in the prior art the practice is to only irradiate the substrate layer prior to forming the laminate.
    Type: Grant
    Filed: May 22, 1975
    Date of Patent: August 23, 1977
    Assignee: W. R. Grace & Co.
    Inventor: William P. Kremkau