Patents by Inventor Paul G. Linsen

Paul G. Linsen 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 making paper using microparticles
    Patent number: 6193844
    Abstract: A microparticle composition for paper making includes finely divided particles of a water insoluble solid such as amorphous sodium aluminosilicate, and having an anionic charge of at least 20 millivolts, and preferably from about 40 to 60 millivolts, and a particle size of less than about 0.1 microns.
    Type: Grant
    Filed: September 14, 1999
    Date of Patent: February 27, 2001
    Inventors: John R. McLaughlin, Paul G. Linsen
  • Method of making paper using microparticles
    Patent number: 5968316
    Abstract: A microparticle composition for paper making includes finely divided particles of a water insoluble solid such as zeolite A, and having an anionic charge of at least 20 millivolts, and preferably from about 40 to 60 millivolts, and a particle size of less than about 0.1 microns. The microparticle composition also includes water and a dispersion agent, and is prepared by milling in an agitated media mill until the desired particle size is achieved.
    Type: Grant
    Filed: July 7, 1997
    Date of Patent: October 19, 1999
    Inventors: John R. McLauglin, Paul G. Linsen