Patents by Inventor Oldrich C. Prochazka

Oldrich C. Prochazka 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).

  • Integrated pulping process of waste paper yielding tissue-grade paper fibers
    Patent number: 5755926
    Abstract: This invention provides an integrated system for recovering fibers from mixed grades of waste paper and simultaneously cleaning (deinking) waste fibers. The system comprises a mild alkaline pulping process with oxygen and hydrogen peroxide followed by rapid decompression of fibers and then by hot washing.
    Type: Grant
    Filed: February 4, 1997
    Date of Patent: May 26, 1998
    Assignee: Kimberly-Clark Worldwide, Inc.
    Inventors: Charles W. Hankins, Oldrich C. Prochazka, John F. Schmitt