Patents by Inventor Pierre Flecker

Pierre Flecker 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 and apparatus for monitoring the melting process in vacuum arc furnaces
    Patent number: 4435818
    Abstract: A method and apparatus for vacuum arc furnaces monitors the arc by spectrum analysis of the arc's light obtained with a radiation receiver. Upon the occurrence of spectrum lines indicating vaporization of the crucible material, the melting process is stopped or adjusted to extinguish the arc burning on the crucible which vaporized the crucible material for the spectrum analysis.
    Type: Grant
    Filed: May 25, 1982
    Date of Patent: March 6, 1984
    Assignee: Leybold-Heraeus GmbH
    Inventors: Otto Stenzel, Pierre Flecker