Patents by Inventor Eino A. Rosenberg

Eino A. Rosenberg 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).

  • Procedure for roasting seleniferous material
    Patent number: 4473396
    Abstract: The invention concerns a procedure for separating selenium from seleniferous raw material by roasting this material with oxygen at elevated temperature in enclosed space.With a view to improving the separation of selenium, the roasting is carried out in the presence of oxides of sulphur.
    Type: Grant
    Filed: June 23, 1983
    Date of Patent: September 25, 1984
    Assignee: Dutokumpu Oy
    Inventors: Olli V. J. Hyvarinen, Leo E. Lindroos, Eino A. Rosenberg
  • Process for producing pulverous selenium from raw selenium
    Patent number: 4127235
    Abstract: A process for producing pulverous selenium from dried raw selenium by distillation, granulating the molten distillate, dripping it into water, grinding the granules, and drying the powder, in which the drying of the raw selenium before the distillation is by spray drying, the selenium granules being ground while in the form of an aqueous slurry, and the final drying of the ground selenium slurry being again effected by spray drying.
    Type: Grant
    Filed: December 7, 1977
    Date of Patent: November 28, 1978
    Assignee: Outokumpu Oy
    Inventors: Borje E. W. Klaile, Jussi J. Kayhko, Eino A. Rosenberg