Patents by Inventor Gurhard Schaefer

Gurhard Schaefer 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).

  • Patent number: 4970059
    Abstract: A tubular furnace as a reactor for producing carbon black is disclosed having a constriction in at least the area of the spray device for the carbon black starting material which is oriented along the reactor axis. A combination chamber for generating the gaseous pyrolysis medium for the carbon black raw material is laterally located in front of the constriction. The central axes of the reactor tube and the combustion chamber are in the same plane and are essentially at right angles to one another. In addition, a method for producing furnace carbon blacks is disclosed in which the described reactor can be used for forming a highly turbulent, yet essentially non-swirling flow of combustion gases into which the carbon black starting material is injected.
    Type: Grant
    Filed: November 7, 1989
    Date of Patent: November 13, 1990
    Assignees: KG Deutsche Gasrusswerke GmbH & Co., Degussa Aktiengesellschaft
    Inventors: Gurhard Schaefer, Peter Kopietz