Patents by Inventor Bernard Lelong

Bernard Lelong 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 of preparing gas samples from liquids initially containing such gases
    Patent number: 4699886
    Abstract: A method is provided for continuous quantitative analysis of H.sub.2 S dissolved in crude oil. The liquid is injected into a mixing chamber 14 in the form of a microsprayed mist meeting a nitrogen stream. The mist conveyed by the nitrogen is injected in the lower unfilled part 16a of a mist separation chamber 16 filled with solid mist separation material and passes from bottom to top through said filling while giving up liquid in the form of coalesced droplets. The gas and nitrogen mixture emerging at the top 16b of chamber 16 is free of at least a large part of the least volatile constituents.
    Type: Grant
    Filed: May 6, 1986
    Date of Patent: October 13, 1987
    Assignee: Societe Nationale Elf Aquitaine (Production)
    Inventor: Bernard Lelong
  • Plaster obtained from phosphogypsum and its process of obtention
    Patent number: 4193812
    Abstract: The object of the present invention is a plaster obtained from phosphogypsum and its process of obtention. The plaster according to the invention contains phosphatic impurities which are fundamentally in the form of brushite and monetite of the formula CaHPO.sub.4, which corresponds in infra-red spectrometry to the appearance of a peak characteristic of this formula, said plaster having a normal setting time.
    Type: Grant
    Filed: April 12, 1978
    Date of Patent: March 18, 1980
    Assignee: Lafarge
    Inventors: Jean-Pierre Caspar, Bernard Lelong