Patents by Inventor Royal D. Thomas, Jr.

Royal D. Thomas, Jr. 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).

  • Ferritic stainless steel weld wire suitable for GMA welding
    Patent number: 4245145
    Abstract: A ferritic stainless steel weld wire for forming a ferritic weld deposit free of martensite under a gas blanket containing a reactive component. The weld wire contains in weight percent about______________________________________ w/o ______________________________________ Carbon 0.04 maximum Manganese 1.0 maximum Silicon 1.0 maximum Phosphorous 0.045 maximum Sulfur 0.045 maximum Chromium 10.50-12.00 Titanium 0.30-0.75 Nitrogen 0.02 maximum Nickel 0.25 maximum Molybdenum 0.50 maximum Copper 0.50 maximum Cobalt 0.25 maximum ______________________________________and the balance iron. The ratio of the weight percent titanium to the sum of the weight percent carbon plus the weight percent nitrogen is at least 12.5:1 in the weld wire and at least 8:1 in the weld deposit.
    Type: Grant
    Filed: August 31, 1979
    Date of Patent: January 13, 1981
    Assignee: Carpenter Technology Corporation
    Inventors: Gunvant N. Maniar, Joseph B. Koch, Royal D. Thomas, Jr.