Patents Represented by Attorney Edmond Patnaude

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  • Hot gas filter
    Patent number: 4968467
    Abstract: A ceramic filter element for filtering hot gasses is manufactured by first forming a skeletal member made up of randomly disposed ceramic fibers by pulling an aqueous solution of the fibers and a liquid binder onto a mandrel and then heat treating the member to dry the binder. The dried member is then coated with alumina gel, colloidal aluminum or colloidal silica and heat treated at a temperature within the range of 1700 degrees F. to 2300 degrees F. to dry the coating and increase the resistance of the coating to corrosion by hot gasses.
    Type: Grant
    Filed: July 10, 1989
    Date of Patent: November 6, 1990
    Assignee: Industrial Filter & Pump Mfg. Co.
    Inventor: James F. Zievers