Patents by Inventor Klaus E. Richter

Klaus E. Richter 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).

  • Precipitation hardening ferritic-pearlitic steel valve
    Patent number: 5286311
    Abstract: A precipitation hardening ferritic-pearlitic steel containing:0.20 to 0.60% carbon0.20 to 0.95% silicon0.50 to 1.80% manganese0.004 to 0.04% nitrogen0.05 to 0.20% vanadium and/or niobium0 to 0.20% sulfur0 to 0.70% chromium0 to 0.10% aluminum0 to 0.05% titaniumbalance iron and incidental impurities. The steel is useful for valves in internal combustion engines.
    Type: Grant
    Filed: November 12, 1992
    Date of Patent: February 15, 1994
    Assignee: Thyssen Edelstahlwarke AG
    Inventors: Volker Schuler, Klaus E. Richter
  • Internal combustion engine valve composed of precipitation hardening ferritic-pearlitic steel
    Patent number: 5221373
    Abstract: A precipitation hardening ferritic-pearlitic steel containing:0.20 to 0.60% carbon0.20 to 0.95% silicon0.50 to 1.80% manganese0.004 to 0.04% nitrogen0.05 to 0.20% vanadium and/or niobium0 to 0.20% sulfur0 to 0.70% chromium0 to 0.10% aluminum0 to 0.05% titaniumbalance iron and incidental impurities. The steel is useful for valves in internal combustion engines.
    Type: Grant
    Filed: November 15, 1991
    Date of Patent: June 22, 1993
    Assignee: Thyssen Edelstahlwerke AG
    Inventors: Volker Schuler, Klaus E. Richter