Patents by Inventor Michael A. DeAngelo, Jr.

Michael A. DeAngelo, Jr. 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).

  • Etch solution and method
    Patent number: 4457951
    Abstract: In manufacturing a circuit which includes the step of etching a polymeric material in the presence of exposed metallic conductors, the polymer is etched with an aqueous solution comprising chromic acid [which may be added in the form of chromic oxide (CrO.sub.3)], sulfuric acid, phosphoric acid and water wherein the water added does not exceed 55 volume percent of the total volume.
    Type: Grant
    Filed: October 28, 1983
    Date of Patent: July 3, 1984
    Assignee: AT&T Technologies, Inc.
    Inventors: John F. D'Amico, Michael A. DeAngelo, Jr.
  • Treatment of a substrate surface to reduce solder sticking
    Patent number: 4389771
    Abstract: A method for preventing solder sticking on printed circuit substrates comprises mechanically roughening the surface of the substrate.
    Type: Grant
    Filed: January 5, 1981
    Date of Patent: June 28, 1983
    Assignee: Western Electric Company, Incorporated
    Inventors: Michael P. Cassidy, John F. D'Amico, Michael A. DeAngelo, Jr., Kon-Mang Lin
  • Method for reducing solder sticking on a printed wiring board
    Patent number: 4360968
    Abstract: A method of inhibiting solder sticking between circuit elements of a partially uncured rubber-modified epoxy printed circuit board comprises exposing the board containing the circuit pattern thereon to UV radiation prior to the application of solder thereto.
    Type: Grant
    Filed: July 27, 1981
    Date of Patent: November 30, 1982
    Assignee: Western Electric Company, Incorporated
    Inventors: John F. D'Amico, Michael A. DeAngelo, Jr., Manjini Saminathan