Patents by Inventor Hans J. Giertz

Hans J. Giertz 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 gas pressure regulation in the retort of a coke oven
    Patent number: 5609731
    Abstract: A process is disclosed for regulating the gas pressure in the retort of a coke oven. Pivotable cup valves arranged in the elbows of the ascending pipe are actuated as throttling members according to the pressure curve resulting from gas formation from the coal to be cokefied. Throttling of each individual retort is effected by varying water supply, thus regulating the extent of submersion in water, and regulation follows actual pressure conditions in the retort of the coke oven.
    Type: Grant
    Filed: March 2, 1995
    Date of Patent: March 11, 1997
    Assignee: Bergwerksverband GmbH
    Inventors: Hans J. Giertz, Werner Eisenhut, Friedrich Huhn, Hans J. Hammermann