Patents by Inventor Niels J. Kjargaard

Niels J. Kjargaard 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).

  • Lignosulfonate composition and process for its preparation
    Patent number: 4019995
    Abstract: Lignosulfonate and sulfonated tannin compositions having magnetic properties which may be water soluble and a process for their preparation are described.
    Type: Grant
    Filed: November 7, 1975
    Date of Patent: April 26, 1977
    Assignee: Georgia-Pacific Corporation
    Inventors: William Scott Briggs, Niels J. Kjargaard