Patents by Inventor Ivan A. De Vynck

Ivan A. De Vynck 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).

  • Process for the preparation of refined tantalum or niobium
    Patent number: 4727928
    Abstract: Tantalum or niobium in the form of powder or pieces containing volatile impurities, e.g. sodiothermic tantalum powder, is first converted into crude cast metal by plasma melting and then the crude cast metal is refined by electron beam melting.
    Type: Grant
    Filed: July 8, 1986
    Date of Patent: March 1, 1988
    Assignee: Metallurgie Hoboken-Overpelt
    Inventors: Ivan A. De Vynck, Pierre D. E. De Backer