Patents by Inventor Douglas J. Herdman

Douglas J. Herdman 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).

  • Phosphate free fire retardant composition
    Publication number: 20020011593
    Abstract: A phosphate and ammonia free composition for treating an object (i.e., lumber, plywood and other wood products) is described. The treating solution may be applied to the object by dipping, soaking, brushing, spraying, etc., however, vacuum and/or pressure techniques may be used to impregnate the object according to the method of this invention, including both the empty-cell process and the full-cell process. The composition achieves fire retardant qualities without object degradation when the treated object is subjected to heat and humidity over time. The composition of this invention includes nitrogen in a predetermined ratio to boron.
    Type: Application
    Filed: August 20, 2001
    Publication date: January 31, 2002
    Inventors: Michael J. Richards, Douglas J. Herdman
  • Phosphate free fire retardant composition
    Patent number: 6306317
    Abstract: A phosphate and ammonia free composition for treating an object (i.e., lumber, plywood and other wood products) is described. The treating solution may be applied to the object by dipping, soaking, brushing, spraying, etc., however, vacuum and/or pressure techniques may be used to impregnate the object according to the method of this invention, including both the empty-cell process and the full-cell process. The composition achieves fire retardant qualities without object degradation when the treated object is subjected to heat and humidity over time. The composition of this invention includes nitrogen in a predetermined ratio to boron.
    Type: Grant
    Filed: May 23, 2000
    Date of Patent: October 23, 2001
    Assignee: S-T-N Holdings, Inc.
    Inventors: Michael J. Richards, Douglas J. Herdman