Patents by Inventor Ulrich Wyss

Ulrich Wyss 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 soluble guar product and method for making it
    Patent number: 4320226
    Abstract: A water-soluble guar product is obtained by reacting guar gum with an aqueous phosphate solution and oxidizing the product in the presence of alkali. These two process stages can also be combined into a one-stage process. The desired product is also obtained by reaction of an already partially depolymerized guar gum with aqueous phosphate solution. The product whose viscosity in aqueous solution can be set very accurately is used as thickening agent, particularly in the paper industry.
    Type: Grant
    Filed: October 9, 1980
    Date of Patent: March 16, 1982
    Assignee: Meyhall Chemical A.G.
    Inventors: Karl H. O. Tiefenthaler, Ulrich Wyss