Patents Assigned to Michael Wall & Sons Enterprises Ltd.
  • Liquid wood preservative solution
    Patent number: 5846305
    Abstract: A liquid wood preservative solution includes sufficient quantities of a copper compound known as having beneficial effects as a wood preservative to provide a copper metal content of between 1% and 6% by weight. At least 6% by weight of a liquid amine solvent is provided for every 1% of the copper metal. The liquid wood preservative solution includes between 10% and 30% by weight of a boron compound known as having beneficial effects as a wood preservative. At least 1% by weight of glycol is provided for every 1% of the boron compound.
    Type: Grant
    Filed: October 23, 1996
    Date of Patent: December 8, 1998
    Assignee: Michael Wall & Sons Enterprises Ltd.
    Inventor: John Payzant