Patents by Inventor Heinrich ZURStrassen

Heinrich ZURStrassen 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 the production of synthetic wollastonite materials
    Patent number: 4047968
    Abstract: A method for the production of synthetic wollastonite material. The treatment involves slag melt which is obtained during the thermal production of phosphorous from crude phosphate. This slag is then treated with water under a preferred embodiment and burned at a certain temperature in an oxidizing atmosphere.
    Type: Grant
    Filed: August 19, 1974
    Date of Patent: September 13, 1977
    Assignee: Dyckerhoff Zementwerke AG
    Inventors: Heinrich ZURStrassen, Eberhard Rauschenfels