Patents by Inventor Stefan Drewes

Stefan Drewes 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 and apparatus for transporting bulk materials
    Publication number: 20070122257
    Abstract: Bulk materials are filled in the dry state, under an inert gas atmosphere, into a transporting vessel, which then has an excess inert gas pressure. The operation of emptying the bulk material out of the transporting vessel likewise takes place under an inert gas atmosphere. The method and the apparatus are suitable for transporting bulk materials which are sensitive to air and moisture.
    Type: Application
    Filed: July 27, 2006
    Publication date: May 31, 2007
    Inventors: Claus Bauer, Stefan Drewes