Patents by Inventor David Michael Pickard

David Michael Pickard 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).

  • Castable refractory compositions
    Patent number: 6287999
    Abstract: The invention relates to a method of producing refractory compositions and more particularly to a method for producing castable refractory compositions which comprises combining appropriate quantities of bulk particulate refractory aggregates substantially without pre-mixing; separately adding to the aggregate system an appropriate quantity of a pre-blended binder composition; mixing the aggregate system and the pre-blended binder composition in a mixer; and discharging the refractory composition from the mixer.
    Type: Grant
    Filed: February 22, 2000
    Date of Patent: September 11, 2001
    Assignee: Vesuvius Crucible Company
    Inventors: Alan Hey, David Michael Pickard