Patents by Inventor Donald B. Butt

Donald B. Butt 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).

  • Method for superficial marking of zirconium and certain other metals
    Patent number: 4547649
    Abstract: A marking system for providing a superficial metallurgically immaterial mark on zirconium, its alloys, and other metals is disclosed. The method includes producing a thin oxide layer on the surface of the metal, and locally heating a portion of the oxide layer to reduce it to the base metal and oxygen, which is driven into solid solution, thereby leaving a mark of contrasting color.
    Type: Grant
    Filed: March 4, 1983
    Date of Patent: October 15, 1985
    Assignee: The Babcock & Wilcox Company
    Inventors: Donald B. Butt, William C. Young