Patents by Inventor Michael L. Paulson

Michael L. Paulson 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 for flocculating finely divided solids suspended in nonpolar liquids
    Patent number: 5447638
    Abstract: A method for flocculating finely divided particles suspended in nonpolar liquids, thereby facilitating the removal of these particles by sedimentation or filtration, by treating the contaminated nonpolar liquids with from about 0.01% to about 5% by weight of a flocculant comprising a water soluble organic compound having a cationic quaternary nitrogen or ammonium group. The flocculants useful in the method of the invention are desirably miscible or dispersible in the nonpolar liquid, and a carrier solvent or surfactant may be used to improve dispersibility of the flocculant.
    Type: Grant
    Filed: September 16, 1993
    Date of Patent: September 5, 1995
    Assignee: NCH Corporation
    Inventors: Robert M. Holdar, Michael L. Paulson