Patents by Inventor Edwin L. Wolf

Edwin L. Wolf 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).

  • Apparatus and method for welding duplex stainless steel
    Patent number: 6884963
    Abstract: Arc welding of duplex stainless steel tubing is accomplished using a non-pulsed electric arc and a high refractory weld flux. Weld beads, uniform throughout their lengths, and having a duplex phase structure and desirable profile are produced by single pass orbital welding, even if the wall thickness of the duplex tubing exceeds 2 mm.
    Type: Grant
    Filed: June 23, 2000
    Date of Patent: April 26, 2005
    Assignee: Swagelok Company
    Inventors: Nathan D. Ames, Andrew P. Marshall, Charles Sapsford, Edwin L. Wolf