Patents by Inventor Paul J. Krudy

Paul J. Krudy 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).

  • Process for making non-magnetic nickel tungsten carbide cemented carbide compositions and articles made from the same
    Patent number: 5338506
    Abstract: A process for making a non magnetic Ni-WC cemented carbide composition and articles made from the same. The process comprises:(a) dewaxing a green Ni-WC cemented carbide substrate in the presence of hydrogen gas at a pressure less than about 1000 torr and at a sufficient flow rate and a sufficient time to affect the saturation magnetization and magnetic permeability of the Ni-WC cemented carbide substrate;(b) pumping out the hydrogen gas and introducing argon at a pressure in the range of about 1 torr to 1000 torr;(c) increasing the temperature up to the sintering temperature to facilitate sintering of the Ni-WC cemented carbide substrate; and;(d) cooling the furnace to room temperature.The articles made according to this invention are useful as wear parts for electronic instruments and as punches form aluminum beverage cans.
    Type: Grant
    Filed: December 21, 1992
    Date of Patent: August 16, 1994
    Assignee: Valenite Inc.
    Inventors: John W. Friederichs, Prakash K. Mirchandani, Paul J. Krudy