Patents by Inventor Douglas B. Whiting

Douglas B. Whiting 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).

  • Process for fixing wooden articles pressure treated with chromated-copper-arsenate
    Patent number: 5089302
    Abstract: This invention is directed to a process for accelerating the fixation of chromated-copper-arsenate (CCA) preservative in wooden articles. The invention particularly pertains to a process of fixing CCA in softwoods such as lodgepole pine, so that it does not leach. A process of fixing chromated-preservatives in freshly treated wood by applying moderate heat to the treated wood while initially maintaining the treated wood in a highly humid or saturated atmosphere, and subsequently maintaining the atmosphere about the freshly treated wood at a controlled equilibrium moisture content level.
    Type: Grant
    Filed: January 28, 1991
    Date of Patent: February 18, 1992
    Assignee: Bell Pole Co. Ltd.
    Inventors: John N. R. Ruddick, George H. Eaton, Douglas B. Whiting