Patents by Inventor Claus Bertrand

Claus Bertrand 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 the continuous coking of pitches and utilization of the coke obtained thereby
    Patent number: 4764318
    Abstract: Coke for reactor graphite is produced continuously by coking a hard pitch with a softening point (K.-S.) above 130.degree. C. and a coking residue of at least 45% by weight in a rotary pipe furnace equipped with a moving device and subsequent calcination without intermediate cooling. The temperature of the inner wall of the indirectly heated furnace ranges from about 500.degree. to about 800.degree. C. The gases and vapors formed during the coking process are guided in countercurrent flow to the pitch.
    Type: Grant
    Filed: March 6, 1987
    Date of Patent: August 16, 1988
    Assignee: Ruetgerswerke Aktiengesellschaft
    Inventors: Manfred Morgenstern, Claus Bertrand