Patents by Inventor John R. Piazza

John R. Piazza 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).

  • Strippable resists
    Patent number: 4421814
    Abstract: A printed circuit board is formed from a metal-clad substrate by applying a solvent-free, non-dryable ink in a predetermined pattern on the substrate, dusting powdered resin over the surface, removing any resin powder not retained by the ink from the surface, heating the substrate having the ink powder thereon to a temperature so as to fuse the powdered resin to form a strippable resist, etching the uncoated portion of the metal laminate and stripping the resist subsequent to etching.
    Type: Grant
    Filed: March 29, 1982
    Date of Patent: December 20, 1983
    Assignee: Western Electric Co., Inc.
    Inventor: John R. Piazza
  • Strippable resists
    Patent number: 4254163
    Abstract: A printed circuit board is formed from a metal-clad substrate by applying a solvent-free, non-dryable ink in a predetermined pattern on the substrate, dusting powdered resin over the surface, removing any resin powder not retained by the ink from the surface, heating the substrate having the ink powder thereon to a temperature so as to fuse the powdered resin to form a strippable resist, etching the uncoated portion of the metal laminate and stripping the resist subsequent to etching.
    Type: Grant
    Filed: April 13, 1979
    Date of Patent: March 3, 1981
    Assignee: Western Electric Company, Inc.
    Inventor: John R. Piazza
  • Method of rendering an ink strippable
    Patent number: 4243700
    Abstract: A method of rendering an ink, selected from the group consisting of an oil-modified alkyd ink and a drying oil ink, strippable from a surface, upon which it is applied and dried, is disclosed. The method comprises applying to the printed ink, prior to the drying thereof, a modifying powder comprising a petroleum resin.
    Type: Grant
    Filed: March 7, 1979
    Date of Patent: January 6, 1981
    Assignee: Western Electric Company, Inc.
    Inventor: John R. Piazza
  • Method of rendering an ink strippable
    Patent number: 4157936
    Abstract: A method of rendering an ink, selected from the group consisting of an oil-modified alkyd ink and a drying oil ink, strippable from a surface, upon which it is applied and dried, is disclosed. The method comprises applying to the printed ink, prior to the drying thereof, a modifying powder comprising a petroleum resin.
    Type: Grant
    Filed: February 21, 1978
    Date of Patent: June 12, 1979
    Assignee: Western Electric Company, Inc.
    Inventor: John R. Piazza