Patents by Inventor Michel Legendre

Michel Legendre 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).

  • Attenuation compensation in amplification for a distribution network
    Patent number: 6310516
    Abstract: An amplifier intended for a signal distribution network, comprising filter means for giving a positive slope to the curve (N, Lin, K) of the amplifier gain as a function of frequency. The filter means produce a curve (N) that satisfies the formula: L(dB&mgr;V)=K*(F)3/2 in which “L” is the level of the output signal, “F” the frequency and “K” a proportionality factor.
    Type: Grant
    Filed: June 14, 2000
    Date of Patent: October 30, 2001
    Assignee: U.S. Philips Corporation
    Inventor: Michel Legendre
  • Hydrocarbon isomerization catalysts and procedures for the preparation and use thereof
    Patent number: 4283585
    Abstract: Hydrocarbon isomerization catalysts comprising typically refractory mineral oxide carrier such as alumina and a halogen element present in combined form, together with, in the free or combined state:A platinum-group metal;second element from the group consisting of titanium, zirconium, tungsten and molybdenum; anda metal halide such as AlCl.sub.3.
    Type: Grant
    Filed: April 14, 1980
    Date of Patent: August 11, 1981
    Assignee: Compagnie Francaise de Raffinage
    Inventors: Michel Legendre, Philippe Engelhard
  • Method of using catalysts for reforming or isomerizing hydrocarbons
    Patent number: 4213849
    Abstract: The improvement of the preferred Pt-Sn on alumina bimetallic catalyst (and similar catalysts) for hydrotreatment of hydrocarbons, comprising the catalyst further containing silicon in combined form.
    Type: Grant
    Filed: April 9, 1979
    Date of Patent: July 22, 1980
    Assignee: Compagnie Francaise de Raffinage
    Inventors: Philippe Engelhard, Michel Legendre, Guy Paris, Georges Szabo
  • Hydrocarbon isomerization catalysts and procedures for the preparation thereof
    Patent number: 4201696
    Abstract: Hydrocarbon isomerization catalysts comprising typically refractory mineral oxide carrier such as alumina and a halogen element present in combined form, together with, in the free or combined state:a platinum-group metal;second element from the group consisting of titanium, zirconium, tungsten and molybdenum; anda metal halide such as AlCl.sub.3.
    Type: Grant
    Filed: November 27, 1978
    Date of Patent: May 6, 1980
    Assignee: Compagnie Francaise de Raffinage
    Inventors: Michel Legendre, Philippe Engelhard
  • Catalysts for hydrotreatment of hydrocarbons including methods of preparing and using same
    Patent number: 4159257
    Abstract: The improvment of the preferred Pt-Sn on alumina bimetallic catalyst (and similar catalysts) for hydrotreatment of hydrocarbons, comprising the catalyst further containing silicon in combined form.
    Type: Grant
    Filed: April 4, 1977
    Date of Patent: June 26, 1979
    Assignee: Compagnie Francaise des Petroles
    Inventors: Philippe Engelhard, Michel Legendre, Guy Paris, Georges Szabo
  • Catalysts for the isomerization of hydrocarbons, and process for the preparation of said catalysts
    Patent number: 4024077
    Abstract: Isomerization catalysts for hydrocarbons, and particularly for normal paraffins and/or naphthenes, formed of the following:At least one platinum-group metal, preferably platinum;At least one element selected from the group consisting of rare earth metals and yttrium; andAt least one metal halide, for example aluminum trichloride,A carrier for the foregoing metals and halide which is formed in whole or in part of at least one refractory mineral oxide, such as alumina, and additionally a halogen in combined form, preferably chlorine.
    Type: Grant
    Filed: July 31, 1975
    Date of Patent: May 17, 1977
    Assignee: Compagnie Francaise de Raffinage
    Inventors: Philippe Engelhard, Michel Legendre