Patents by Inventor Rikhard C. Dauber

Rikhard C. Dauber 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 improving the flatness of compression-rolled plastic film
    Patent number: 4310485
    Abstract: The flatness of compression-rolled plastic film is improved by passing the film under tension over heated rolls, stretching the heated film, setting the stretched film by passing it over a tempering roll, and then cooling the set film by passing it over a cooling roll.
    Type: Grant
    Filed: September 26, 1980
    Date of Patent: January 12, 1982
    Assignee: Crown Zellerbach Corporation
    Inventor: Rikhard C. Dauber