Patents by Inventor William R. Wernsmann

William R. Wernsmann 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 using anionic copolymer formulations for seepage control
    Patent number: 7306406
    Abstract: This invention relates to a method of seepage control which comprises contacting a soil surface with a composition comprising anionic copolymers and a surfactant. This invention provides a method of seepage control for irrigation ditches, drainage ditches, farm ponds, feeder canals, golf course water features, park ponds and lakes, lagoons, and the like.
    Type: Grant
    Filed: February 21, 2006
    Date of Patent: December 11, 2007
    Assignee: Ciba Specialty Chemicals Corporation
    Inventors: John M. Putnam, William R. Wernsmann