Patents by Inventor Heinrich Stich

Heinrich Stich 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 the preparation of raw mix for the production of cement and sulphuric acid
    Patent number: 4040853
    Abstract: A process for the preparation of raw mix for the production of cement and sulphuric acid by the cement-sulphuric acid process, which mix comprises calcium sulphate, coke and other additives, by separate grinding of the materials used, which comprises grinding the coke alone to a degree of comminution corresponding to a grain size spectrum, by weight, of<60 .mu. 25 to 40%60 to 90 .mu. 8 to 15%>90 .mu. 45 to 70%and then mixing the ground coke with a finely ground mixture of calcium sulphate and the remaining additives, and the use of such raw mix in the production of cement and sulphuric acid.
    Type: Grant
    Filed: December 16, 1975
    Date of Patent: August 9, 1977
    Assignee: Chemie Linz Aktiengesellschaft
    Inventors: Walter Binder, Josef Hutter, Heinrich Stich, Kurt Ruckensteiner, Josef Tines, deceased, by Antonie Tines, legal representative, by Heide Schwarz, legal representative