Patents by Inventor Ramanathan Krishnamurthy

Ramanathan Krishnamurthy 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).

  • Cobalt-chromium alloy resistant to high speed/self-coupled sliding wear
    Patent number: 11702724
    Abstract: A wrought-able, cobalt-based alloy is disclosed which has extraordinary resistant to high speed/self-coupled sliding wear. This alloy contains about 0.83 wt. % nickel, about 0.125 wt. % nitrogen, about 26.85 wt. % chromium, about 4.58 wt. % molybdenum, about 2.33 wt. % tungsten, about 2.97 wt. % iron, about 0.84 wt. % manganese, about 0.27 wt. % silicon, about 0.065 wt. % carbon, and about 0.11 wt. % aluminum, with the balance cobalt plus impurities.
    Type: Grant
    Filed: March 24, 2021
    Date of Patent: July 18, 2023
    Assignee: Haynes International, Inc.
    Inventors: Paul Crook, Ramanathan Krishnamurthy
  • Wroughtable, Chromium-Bearing, Cobalt-Based Alloys with Improved Resistance to Galling and Chloride-Induced Crevice Attack
    Publication number: 20230183840
    Abstract: A chromium-bearing, cobalt-based alloys amenable to wrought processing has improved resistance to both chloride-induced crevice corrosion and galling. The alloy contains up to 3.545 wt. % nickel, 0.242 to 0.298 wt. % nitrogen, and may contain 22.0 to 30.0 wt. % chromium, 3.0 to 10.0 wt. % molybdenum, up to 5.0 wt. % tungsten, up to 7 wt. % iron, 0.5 to 2.0 wt. % manganese, 0.5 to 2.0 wt. % silicon, 0.02 to 0.11 wt. % carbon, 0.005 to 0.205 wt. % aluminum, and the balance is cobalt plus impurities.
    Type: Application
    Filed: May 10, 2021
    Publication date: June 15, 2023
    Inventors: Paul Crook, Ramanathan Krishnamurthy
  • COBALT-CHROMIUM ALLOY RESISTANT TO HIGH SPEED/SELF-COUPLED SLIDING WEAR
    Publication number: 20220307111
    Abstract: A wrought-able, cobalt-based alloy is disclosed which has extraordinary resistant to high speed/self-coupled sliding wear. This alloy contains about 0.83 wt. % nickel, about 0.125 wt. % nitrogen, about 26.85 wt. % chromium, about 4.58 wt. % molybdenum, about 2.33 wt. % tungsten, about 2.97 wt. % iron, about 0.84 wt. % manganese, about 0.27 wt. % silicon, about 0.065 wt. % carbon, and about 0.11 wt.
    Type: Application
    Filed: March 24, 2021
    Publication date: September 29, 2022
    Inventors: Paul Crook, Ramanathan Krishnamurthy