Patents by Inventor John Hamilton Maddock

John Hamilton Maddock 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).

  • HARD WELD OVERLAYS RESISTANT TO RE-HEAT CRACKING
    Publication number: 20140234154
    Abstract: A hard weld overlay which is resistant to cracking when re-heated, and a method for designing such alloys, is disclosed. The alloys are able to resist re-heat cracking through prevention of the precipitation and/or growth of embrittling carbide, borides, or borocarbides at elevated temperatures. In one embodiment, the thermodynamics of the alloy system possess only primary carbides and secondary ferrite carbides.
    Type: Application
    Filed: February 12, 2014
    Publication date: August 21, 2014
    Applicant: Scoperta, Inc.
    Inventors: Justin Lee Cheney, Shengjun Zhang, John Hamilton Maddock