Patents by Inventor Walter T. Zdybak

Walter T. Zdybak 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).

  • Anionic bituminous emulsions
    Patent number: 4427449
    Abstract: An oil-in-water anionic bituminous emulsion is disclosed wherein an anionic emulsifier is prepared by reacting lignosulfonate with a sulfonyl chloride or bromide of benzene or toluene or substituted benzene or an aliphatic hydrocarbon with four or more carbon atoms.
    Type: Grant
    Filed: June 11, 1982
    Date of Patent: January 24, 1984
    Assignee: Georgia-Pacific Corporation
    Inventor: Walter T. Zdybak