Patents by Inventor William R. Kolker

William R. Kolker 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).

  • Water and fire resistant materials and methods for making the same
    Patent number: 5767178
    Abstract: Compositions comprising a finely divided cellulosic material and an amount of a latex containing magnesium oxychloride and/or magnesium oxysulphate effective to impart water and fire resistance to the cellulosic material are disclosed. Methods to make a water and fire resistant product are also disclosed.
    Type: Grant
    Filed: July 3, 1996
    Date of Patent: June 16, 1998
    Assignee: Pyrotite Corporation
    Inventors: William R. Kolker, Lars Bach
  • Water and fire resistant materials and methods for making the same
    Patent number: 5434200
    Abstract: Compositions comprising a finely divided cellulosic material and an amount of a latex containing magnesium oxychloride and/or magnesium oxysulphate effective to impart water and fire resistance to the cellulosic material are disclosed. Methods to make a water and fire resistant product are also disclosed.
    Type: Grant
    Filed: October 28, 1993
    Date of Patent: July 18, 1995
    Assignee: Pyrotite Corporation
    Inventors: William R. Kolker, Lars Bach