Patents by Inventor Peter Siegfried

Peter Siegfried 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 separating liquids from fine grained solids
    Patent number: 4559133
    Abstract: A process is disclosed of separating fine solids from oil in which the solids are dispersed which comprising contacting said oil with a combination of a compressed above-critical gas and an entraining agent at such temperature and such pressure that the system consisting of the oil, entraining agent and above-critical gas constitutes a single phase, withdrawing and separating the so-withdrawn phase into a liquid phase rich in oil and a gas phase lean in oil, the single-phase mixture of oil, entraining agent and above-critical gas from the solids.
    Type: Grant
    Filed: September 15, 1983
    Date of Patent: December 17, 1985
    Assignee: Peter Siegfried
    Inventors: Peter Siegfried, Gerd Brunner, Dieter Stutzer
  • Process for the gasification of raw carboniferous materials
    Patent number: 4500323
    Abstract: An increased reaction velocity is achieved when gasifying a raw carboniferous material with H.sub.2 O. The raw material is suspended or emulsified in a liquid aqueous solution of a catalytically active salt, and the amount of the catalytically active salt and the pressure are such that the aqueous solution is maintained in the liquid phase.
    Type: Grant
    Filed: July 29, 1982
    Date of Patent: February 19, 1985
    Assignee: Kraftwerk Union Aktiengesellschaft
    Inventors: Peter Siegfried, Martin Wenger