Patents by Inventor Christian Lassau

Christian Lassau 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 hydrogenating unsaturated compounds
    Patent number: 4357478
    Abstract: Unsaturated compounds are hydrogenated in the presence of a catalyst obtained by reacting an organoaluminum compound with a transition metal carboxylate and an organic carboxylic acid.
    Type: Grant
    Filed: May 23, 1980
    Date of Patent: November 2, 1982
    Assignee: Institut Francais du Petrole
    Inventors: Gerard Hillion, Christian Lassau
  • Process for hydrogenating unsaturated compounds
    Patent number: 4271323
    Abstract: Process for hydrogenating unsaturated compounds in the liquid phase in the presence of a soluble catalyst obtained by reacting an organometal derivative or a metal hydride with a synergistic mixture of (a) a compound of zinc, zirconium, manganese, molybdenum, or iron and (b) a nickel or cobalt compound.
    Type: Grant
    Filed: October 10, 1975
    Date of Patent: June 2, 1981
    Assignee: Institut Francais du Petrole
    Inventors: Daniel Durand, Gerard Hillion, Christian Lassau, Lucien Sajus
  • Process for manufacturing dicyclohexanol propane by hydrogenation of diphenol propane
    Patent number: 4192960
    Abstract: Diphenol propane is hydrogenated in the presence of a homogeneous catalyst; water and an alcohol are added at the end of the reaction to assist in the separation of the catalyst residues.
    Type: Grant
    Filed: March 10, 1978
    Date of Patent: March 11, 1980
    Assignee: Institut Francais du Petrole
    Inventors: Gerard Hillion, Christian Lassau
  • Process for manufacturing dicyclohexanol propane by hydrogenating diphenol propane
    Patent number: 4001343
    Abstract: Process for manufacturing dicyclohexanol propane by hydrogenating, with molecular hydrogen, in the presence of a hydrogenation catalyst, diphenol propane dissolved in 2 ethyl-hexanol, adding water at the end of the reaction, distilling the reaction product and separating from the distillate an aqueous phase and a 2 ethyl-hexanol phase, the latter being reused as solvent for the reaction.
    Type: Grant
    Filed: May 9, 1975
    Date of Patent: January 4, 1977
    Assignee: Institut Francais du Petrole
    Inventors: Jean Gaillard, Christian Lassau
  • New process for hydrogenating ketones
    Patent number: 3946087
    Abstract: Ketones are converted by hydrogenation to the corresponding secondary alcohols, in the presence of a soluble catalyst which is obtained by contacting a metal compound, for example a cobalt, nickel or iron salt, with a reducing agent, preferably a trialkylaluminum compound, the reaction being carried out with added metal alcoholate, preferably an alkali metal alcoholate.
    Type: Grant
    Filed: March 6, 1974
    Date of Patent: March 23, 1976
    Assignee: Institut Francais du Petrole des Carburants et Lubrifiants
    Inventors: Gerard Hillion, Christian Lassau