Patents by Inventor Frederick H. Perfect

Frederick H. Perfect 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).

  • Ferrovanadium carbide addition agents and process for their production
    Patent number: 4374667
    Abstract: Ferrovanadium carbide addition agents comprising 75 to 85% vanadium, 8 to 12% carbon, 8 to 12% iron, less than 2% oxygen and having a density of from about 5.8 to about 6.2. The addition agents are produced by fusing vanadium oxide, iron and carbon at about 1700.degree. C. to about 2100.degree. C.
    Type: Grant
    Filed: October 14, 1981
    Date of Patent: February 22, 1983
    Assignee: Reading Alloys, Inc.
    Inventor: Frederick H. Perfect
  • Process for aluminothermic production of chromium and chromium alloys low in nitrogen
    Patent number: 4331475
    Abstract: A process is provided for the aluminothermic production of low nitrogen containing chromium and chromium alloys, said chromium alloys comprising about 80% chromium, about 20% nickel and less than 0.005% nitrogen, said alloys being especially desirable for use as master alloys in production of super alloys where levels of nitrogen imparted by chromium alloying elements are critical.
    Type: Grant
    Filed: July 28, 1980
    Date of Patent: May 25, 1982
    Assignee: Reading Alloys, Inc.
    Inventor: Frederick H. Perfect
  • Molybdenum-titanium-zirconium-aluminum master alloys
    Patent number: 4119457
    Abstract: This invention relates to molybdenum-titanium-zirconium aluminum master alloys containing about 20 to 25% molybdenum, about 1 to 5% titanium, about 40 to 50% zirconium, balance aluminum and not more than about 0.004% nitrogen.
    Type: Grant
    Filed: May 27, 1977
    Date of Patent: October 10, 1978
    Assignee: Reading Alloys, Inc.
    Inventor: Frederick H. Perfect
  • Molybdenum-titanium-zirconium-aluminum master alloys
    Patent number: 4104059
    Abstract: This invention relates to molybdenum-titanium-zirconium-aluminum master alloys containing about 35 to 40 molybdenum, about 1 to 5% titanium, about 15 to 25% zirconium, balance aluminum and not more than about 0.004% nitrogen.
    Type: Grant
    Filed: May 27, 1977
    Date of Patent: August 1, 1978
    Assignee: Reading Alloys, Inc.
    Inventor: Frederick H. Perfect
  • Tungsten-titanium-aluminum master alloy
    Patent number: 4062677
    Abstract: The invention relates to master alloys containing about 55 to about 70% tungsten, about 2 to about 10% titanium, balance substantially aluminum.
    Type: Grant
    Filed: September 16, 1976
    Date of Patent: December 13, 1977
    Assignee: Reading Alloys, Inc.
    Inventor: Frederick H. Perfect
  • Process for producing carbide addition agents
    Patent number: 3982924
    Abstract: Carbide addition agents comprising (a) from about 20 to about 60 atomic percent of carbon, (b) from about 25 to about 60 atomic percent of at least one metal selected from the group consisting of vanadium and columbium, and (c) from about 10 to about 40 atomic percent of at least one metal selected from the group consisting of iron and manganese, are useful alloy addition agents for steel.
    Type: Grant
    Filed: August 6, 1973
    Date of Patent: September 28, 1976
    Assignee: Reading Alloys, Inc.
    Inventor: Frederick H. Perfect