Patents by Inventor Robert Tettweiler

Robert Tettweiler 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 producing coke
    Patent number: 4272323
    Abstract: Briquettes, particularly molded briquettes of pitch-bound coal, are formed and introduced into a coking chamber of an indirectly heated chamber oven. The oven is then operated to form the briquettes into coke. Prior to the introduction of the briquettes into the chamber, the interior walls of the chamber are uniformly heated to a temperature t.sub.K .congruent.1000+[1000B-175].times.[1.23+0.1283(W-3)], wherein: B equals the width (in meters) of the coking chamber, and W equals the initial water content (in weight %) of the briquettes.
    Type: Grant
    Filed: September 6, 1979
    Date of Patent: June 9, 1981
    Assignee: Didier Engineering GmbH
    Inventors: Robert Tettweiler, Hayri Ergun