Patents by Inventor David G. Hatfield

David G. Hatfield 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).

  • Apparatus for decorating surfaces of ceramic ware
    Patent number: 4202290
    Abstract: A method of decorating a surface of a ceramic body in which a thin uniform film of colorant composition material is carried by a decorating member in a suspended state across an opening of selected area and shape corresponding to the designs to be applied to the surface of said body, the colorant material being deposited thereon by breaking the surface tension of the suspended film by contact with said surface. An apparatus for decorating a surface of a ceramic body including a receptacle for the colorant composition material, decorating members for holding one or more films of colorant composition material in a suspended state across openings configured to the shape of the design to be applied to the ceramic body; said decorating members being movable to immerse said decorating members in said colorant composition material and to deposit under gravitational forces said film on said surface.
    Type: Grant
    Filed: June 14, 1978
    Date of Patent: May 13, 1980
    Assignee: Interpace Corporation
    Inventor: David G. Hatfield
  • Method and apparatus for decorating surfaces of ceramic ware
    Patent number: 4169908
    Abstract: A method of decorating a surface of a ceramic body in which a thin uniform film of colorant composition material is carried by a decorating member in a suspended state across an opening of selected area and shape corresponding to the designs to be applied to the surface of said body, the colorant material being deposited thereon by breaking the surface tension of the suspended film by contact with said surface. An apparatus for decorating a surface of a ceramic body including a receptacle for the colorant composition material, decorating members for holding one or more films of colorant composition material in a suspended state across openings configured to the shape of the design to be applied to the ceramic body; said decorating members being movable to immerse said decorating members in said colorant composition material and to deposit under gravitational forces said film on said surface.
    Type: Grant
    Filed: June 14, 1978
    Date of Patent: October 2, 1979
    Assignee: Interpace Corporation
    Inventor: David G. Hatfield