Patents by Inventor Werner Gratz

Werner Gratz 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).

  • Method for processing the residues of a chlorosilane distillation
    Patent number: 5066472
    Abstract: Disclosed is a method for the processing of the residues that occur in the production of chlorosilane. The processing is performed by the separation of the residual chlorosilanes, followed by hydrolysis of these residues with water vapor. The water vapor used has a temperature between 100.degree. and 300.degree. C. and additionally contains hydrogen chloride. The hydrolysis residues occurring in the present method have an extremely small chloride content and can be transported, if desired, directly to a dump. The hydrogen chloride that is released can be absorbed in water and removed as hydrochloric acid or can be desorbed for further technical use. Preferably it is reused for chlorosilane production.
    Type: Grant
    Filed: February 17, 1989
    Date of Patent: November 19, 1991
    Assignee: Huels Aktiengesellschaft
    Inventors: Klaus Ruff, Bernhard Falk, Werner Gratz