Patents by Inventor David E. Sanger

David E. Sanger 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).

  • Production of spherical bismuth shot
    Patent number: 5540749
    Abstract: A method is provided for producing bismuth and bismuth alloy shot particles by a procedure whereby molten bismuth at a temperature less than about 100.degree. C. above the melting point of the bismuth is used to form drops of molten bismuth which fall through a vessel containing a material more viscous than water with the method having a Reynolds Number less than about 100. Preferred materials are polyethylene glycols having a molecular weight of about 4500 and 8000.
    Type: Grant
    Filed: September 8, 1994
    Date of Patent: July 30, 1996
    Assignee: Asarco Incorporated
    Inventors: Taie Li, David E. Sanger, Duane M. Yantorno