Patents Assigned to Perma-Chink Systems, Inc.
  • Preventative treatment of wood
    Patent number: 5601849
    Abstract: Methods and compositions for protecting wooden members (components) against attack by destructive insects and fungi. The wood preservative is formulated as a paste and is applied in that form to an exposed surface of the member. The active ingredient is released by that same moisture which creates conditions conducive to destructive attacks on the wood. Boron-based active ingredients are preferred as are polyethylene glycol carriers for the active ingredient.
    Type: Grant
    Filed: October 25, 1995
    Date of Patent: February 11, 1997
    Assignee: Perma-Chink Systems, Inc.
    Inventors: Richard C. Dunstan, John F. Bartlett
  • Preventative treatment of wood
    Patent number: 5525147
    Abstract: Methods and compositions for protecting wooden members (components) against attack by destructive insects and fungi. The wood preservative is formulated as a paste and is applied in that form to an exposed surface of the member. The active ingredient is released by that same moisture which creates conditions conducive to destructive attacks on the wood. Boron-based active ingredients are preferred as are polyethylene glycol carriers for the active ingredient.
    Type: Grant
    Filed: October 25, 1995
    Date of Patent: June 11, 1996
    Assignee: Perma-Chink Systems, Inc.
    Inventors: Richard C. Dunstan, John F. Bartlett