Patents Examined by Cathy K. Cam
  • Electrical feedthroughs for ceramic circuit board support substrates
    Patent number: 5565262
    Abstract: Electrical feedthroughs in printed circuit board support substrates for use in making double sided ceramic multilayer printed circuit boards are made by insulating the feedthrough openings with a first layer of nickel oxide and one or more layers of glass, and then filling the remainder of the feedthroughs with a conductive metal via fill ink. After firing, the resultant structure provides insulated electrical feedthroughs through the support substrate.
    Type: Grant
    Filed: January 27, 1995
    Date of Patent: October 15, 1996
    Assignee: David Sarnoff Research Center, Inc.
    Inventors: Thomas P. Azzaro, Barry J. Thaler, Edward J. Conlon, Ananda H. Kumar
  • Coated material, the preparation of use thereof
    Patent number: 5554446
    Abstract: A coated material comprising (a) a solid dielectric or semi-conductive substrate which is (b) partially or completely coated on at least one surface with a silicate in which a crystalline charge transfer complex is incorporated.The material can be used as an antistatic or electrically conductive material, preferably in the form of screens or picture tubes provided with an antistatic finish.
    Type: Grant
    Filed: February 16, 1995
    Date of Patent: September 10, 1996
    Assignee: Ciba-Geigy Corporation
    Inventors: Ernst Minder, Walther Hofherr