Patents by Inventor Roland E. Curtis

Roland E. Curtis 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).

  • Titanium alloys
    Patent number: 4067734
    Abstract: Disclosed are alloys of titanium possessing improved combinations of strength, toughness and stress corrosion resistance. These titanium alloys contain from 3.8 to 5.3% Al, up to 4.0% Zr, 2.5 to 4.25% Mo, 2.5 to 4.25% V, up to 1.25% Fe, up to 2.2% Cr and up to 1.0% Ni.
    Type: Grant
    Filed: October 18, 1974
    Date of Patent: January 10, 1978
    Assignee: The Boeing Company
    Inventors: Roland E. Curtis, Peter T. Finden