Patents by Inventor Josef H. Burgert

Josef H. Burgert 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).

  • Water absorbent resin particles of crosslinked carboxyl containing polymers and method of preparation
    Patent number: 5629377
    Abstract: A water-absorbent resin particles that exhibits a centrifuged absorption capacity of 26 g/g or greater, an absorption under load of 24 g/g or greater at 0.6 psi load. Other aspects of the invention are processes for the preparation of such water-absorbent resin particles which comprise the inclusion of chlorine or bromine containing oxidizing agent followed by the heat-treatment to produce particles with superior centrifuged absorption capacity in combination with high absorption under load at high load, and acceptable levels of residuals. These water-absorbent resin particles provide superior performance when incorporated into absorbent structures.
    Type: Grant
    Filed: August 11, 1995
    Date of Patent: May 13, 1997
    Assignee: The Dow Chemical Company
    Inventors: Josef H. Burgert, Stephen B. Christensen, Herbert A. Gartner, Fredric L. Buchholz, Thomas C. Johnson, Andrew T. Graham