Patents by Inventor Louis Richaud

Louis Richaud 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).

  • Blowing grate of a catalytic cracking unit regenerator, containing modular ceramic parts
    Patent number: 5861130
    Abstract: A modular ceramic protective part for a metal blowing grate (1) in a catalytic cracker regenerator, comprises a tubular nozzle portion (4) and a flange portion (6) extending substantially perpendicularly from one end thereof. The part is useful in chemical engineering.
    Type: Grant
    Filed: January 17, 1997
    Date of Patent: January 19, 1999
    Assignee: Societe Europeenne Des Produits Refractaires
    Inventors: Klaus Werhahn, Louis Richaud, Jean Rech
  • Monitoring device for regulating any sequence of automatic operations in an industrial plant
    Patent number: 4310877
    Abstract: The disclosure relates in general terms to a sequence of automatic operations, with which a control loop is associated. By momentarily substituting a monitoring loop for this control loop, free-frequency auto-oscillation is set up in the sequence of automatic operations, and, since the monitoring loop comprises not only a gain amplifier but also a pure phase shifter, this setting-up of auto-oscillation is repeated successively at different frequencies. The device is applicable to the monitoring of any industrial plant for the purpose of regulating it.
    Type: Grant
    Filed: September 26, 1979
    Date of Patent: January 12, 1982
    Assignee: Comsip Entreprise
    Inventor: Louis Richaud