Patents by Inventor Karl Walderbach

Karl Walderbach 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).

  • Process for preparing sulfur dioxide
    Patent number: 4010246
    Abstract: Finely divided sulfur and an oxygen containing gas are combined and burnt. Finely divided sulfuric acid is introduced into the hot flame gases. The resulting gas containing SO.sub.2, water and oxygen can be processed to pure SO.sub.2.
    Type: Grant
    Filed: October 10, 1975
    Date of Patent: March 1, 1977
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Heinz Steinrotter, Karl Walderbach, Hansjorg Mathieu