Patents by Inventor William E. Knaak

William E. Knaak 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).

  • Patent number: 5163247
    Abstract: The present invention relates to an agricultural mulch made from a fibrous cellulosic web having a certain breaking length and which had been surface-coated with a latex coating to improve wet strength and handling properties. The material of the present invention, once formed, is particularly suitable for use in agricultural applications to control weeds, soil moisture and temperature. The mulch can be engineered to have useful life which will correspnd to the growing cycle of a specific crop. Unlike plastic, once the crop has been harvested, the material of the present invention is much more suitable for composting due to the degradable nature of the product.
    Type: Grant
    Filed: April 19, 1991
    Date of Patent: November 17, 1992
    Assignee: Kimberly-Clark Corporation
    Inventors: Robert E. Weber, William E. Knaak