Patents by Inventor Eugeny Polyakov

Eugeny Polyakov 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 of production of tantalum powder with low impurity level
    Publication number: 20080105084
    Abstract: The production of tantalum powder having a low impurity level is provided by a method in which potassium heptafluotantalate is added to a mixture of alkali metal halides in reactor vessel in which the internal surface and auxiliary input accessories of the reactor are covered with a tantalum coating. In one embodiment, the production of tantalum powder with low impurity level includes depositing a protective tantalum coating onto an internal surface of the reactor vessel and auxiliary accessories of a reactor by electrolysis of a mixture of alkali metals halides and potassium heptafluotantalate.
    Type: Application
    Filed: October 30, 2007
    Publication date: May 8, 2008
    Applicant: Niotan, Inc.
    Inventors: John Crawley, Eugeny Polyakov