Patents by Inventor William B. Hewitt

William B. Hewitt 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).

  • Method of mixing dental impression materials and device therefor
    Patent number: 4812119
    Abstract: A method and a device for mixing dental impression materials comprising a motor-driven rotatable turntable with two mixing plates which are successively and detachably secured thereon. The components of thick and thin viscosity, elastomeric dental impression materials are homogeneously mixed together, respectively, on each of the plates as those plates are independently rotated on the turntable.
    Type: Grant
    Filed: June 23, 1987
    Date of Patent: March 14, 1989
    Inventor: William B. Hewitt