Patents by Inventor Richard D. Zordan

Richard D. Zordan 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).

  • Nuclear grade steel articles
    Patent number: 4720435
    Abstract: Disclosed is an iron-base alloy eminently suited for use as components in nuclear energy installations. The alloy normally contains, in percent by weight, about 20% chromium, about 10% nickel, about 5.5% silicon, about 1.5% carbon, about 8% niobium plus vanadium, about 0.05% nitrogen, less than 1% cobalt as an impurity and the balance iron plus normal impurities found in alloys of this class.
    Type: Grant
    Filed: June 18, 1986
    Date of Patent: January 19, 1988
    Assignee: Haynes International, Inc.
    Inventors: Paul Crook, Richard D. Zordan
  • Nuclear grade steels
    Patent number: 4643767
    Abstract: Disclosed is an iron-base alloy eminently suited for use as components in nuclear energy installations. The alloy normally contains, in percent by weight, about 20% chromium, about 10% nickel, about 5.5% silicon, about 1.5% carbon, about 8% niobium plus vanadium, about 0.05% nitrogen, less than 1% cobalt as an impurity and the balance iron plus normal impurities found in alloys of this class.
    Type: Grant
    Filed: November 19, 1984
    Date of Patent: February 17, 1987
    Assignee: Cabot Corporation
    Inventors: Paul Crook, Richard D. Zordan
  • Wear-resistant stainless steel
    Patent number: 4487630
    Abstract: A high chromium stainless steel especially suited for use as wear (galling) resisting components, for example, valve parts. A typical alloy generally contains chromium, nickel, silicon, carbon, an effective cobalt content and the balance iron plus normal impurities. The alloy may be produced in the form of castings, P/M products, hardfacing and welding materials and wrought mill products.
    Type: Grant
    Filed: October 25, 1982
    Date of Patent: December 11, 1984
    Assignee: Cabot Corporation
    Inventors: Paul Crook, Richard D. Zordan