Patents by Inventor Dieter Makrutzki

Dieter Makrutzki 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 of hot-briquetting mixtures of coal and coke
    Patent number: 4211533
    Abstract: Coke is mixed with bituminous coal and the mixture is converted into briquettes. To obtain high-quality and high-strength briquettes, the temperature of the coke is adjusted, prior to mixing, to such a level that when the mixing takes place, the coke/coal mixture will have a precisely predetermined temperature within the scope of 400.degree.-500.degree. C. The exact temperature within this range is selected in dependence upon the characteristics of the coke and the coal.
    Type: Grant
    Filed: April 10, 1978
    Date of Patent: July 8, 1980
    Assignees: Bergwerksverband GmbH, Ruhrkohle AG
    Inventors: Gerd Nashan, Josef Langhoff, Joachim Lehmann, Kurt Kleisa, Dieter Makrutzki