Patents by Inventor Helmut Hein

Helmut Hein 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).

  • Fluidized bed furnace
    Patent number: 4340000
    Abstract: A fluidized bed furnace having a vessel with cooled or insulated walls and an inflow plate. A fluidized bed of inert material is maintained by air nozzles in the inflow plate and heated to the ignition temperature of coal. Pressure pipes deliver the coal and, if appropriate, additives such as lime, into the vessel below the upper boundary of the fluidized bed for combustion.
    Type: Grant
    Filed: March 30, 1979
    Date of Patent: July 20, 1982
    Assignee: Steag AG
    Inventor: Helmut Hein
  • Microbicidal nitrofuryl compounds
    Patent number: 4051253
    Abstract: 2-[(O-ALKYLAROYLHYDRAZONO)PROPEN-1-YL]-5-NITROFURANS [1] ARE PREPARED BY CONDENSING 3-(5-NITRO-2-FURYL)ACRYLALDEHYDE [2] WITH AN O-ALKYLAROYL HYDRAZIDE [3]. Compounds [1] are bactericides, protozoacides and fungicides and are administrable to animals in therapeutically-acceptable compositions.
    Type: Grant
    Filed: October 10, 1975
    Date of Patent: September 27, 1977
    Assignee: Byk Gulden Lomberg Chemische Fabrik GmbH
    Inventors: Helmut Hein, Rosmarie Hermann geb Gleissner, Hartmann Schaefer