Patents by Inventor David Bray

David Bray 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 manufacturing a nail file
    Patent number: 4927483
    Abstract: A nail file comprises a core of stiff sheet material and a layer of abrasive material laminated to at least one surface of the sheet material.
    Type: Grant
    Filed: November 17, 1988
    Date of Patent: May 22, 1990
    Inventor: David Bray
  • Nail file
    Patent number: 4785835
    Abstract: A nail file comprises a core of stiff sheet material and a layer of abrasive material laminated to at least one surface of the sheet material.
    Type: Grant
    Filed: October 14, 1986
    Date of Patent: November 22, 1988
    Inventor: David Bray
  • Method of manufacturing adhesive tape
    Patent number: 4545843
    Abstract: Adhesive tape is manufactured by laminating at least one layer of a heat activated adhesive film to one layer of a substrate material, and coating the thereby obtained laminate with a pressure sensitive adhesive. Because the substrate is laminated with a film, typically a random copolymer of ethylene and acrylic acid, the adhesive which is thereafter coated on the laminate will not flow through the substrate, even if a porous substrate is used.
    Type: Grant
    Filed: August 15, 1983
    Date of Patent: October 8, 1985
    Inventor: David Bray