Patents by Inventor René Challand

René Challand 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).

  • Catalytic hydrogenation processes
    Patent number: 7579295
    Abstract: Catalysts of formula [Ru(L)m(L?)wXY]??(II) wherein X and Y represent simultaneously or independently a hydrogen or halogen atom, a hydroxy group, or an alkoxy, carboxyl or other anionic radical, m is 1 or 2, w is 1 when m is 1 and w is 0 when m is 2, L is a phosphino-amine or phosphino-imine bidentate ligand and L? a diphosphine, are useful for the hydrogenation of substrates having a carbon-hetero atom double bond.
    Type: Grant
    Filed: August 8, 2007
    Date of Patent: August 25, 2009
    Assignee: Firmenich SA
    Inventors: Valentin Rautenstrauch, René Challand, Eric Brazi, Hubert Mimoun, Raphaël Churlaud, Robert Harold Morris, Kamaluddin Abdur-Rashid
  • CATALYTIC HYDROGENATION PROCESSES
    Publication number: 20080015376
    Abstract: Catalysts of formula [Ru(L)m(L?)wXY]??(II) wherein X and Y represent simultaneously or independently a hydrogen or halogen atom, a hydroxy group, or an alkoxy, carboxyl or other anionic radical, m is 1 or 2, w is 1 when m is 1 and w is 0 when m is 2, L is a phosphino-amine or phosphino-imine bidentate ligand and L? a diphosphine, are useful for the hydrogenation of substrates having a carbon-hetero atom double bond.
    Type: Application
    Filed: August 8, 2007
    Publication date: January 17, 2008
    Applicant: Firmenich SA
    Inventors: Valentin Rautenstrauch, Rene Challand, Eric Brazi, Hubert Mimoun, Raphael Churlaud, Robert Morris, Kamaluddin Abdur-Rashid
  • Catalytic hydrogenation processes
    Patent number: 7317131
    Abstract: The catalysts of formula (II): [Ru(L)m(L?)wXY], wherein X and Y represent simultaneously or independently a hydrogen or halogen atom, a hydroxy group, or an alkoxy, carboxyl or other anionic radical, m is 1 or 2, w is 1 when m is 1 and w is 0 when m is 2, L is a phosphino-amine or phosphino-imine bidentate ligand and L? a diphosphine, are useful for the hydrogenation of substrates having a carbon-hetero atom double bond.
    Type: Grant
    Filed: September 11, 2001
    Date of Patent: January 8, 2008
    Assignee: Firmenich SA
    Inventors: Valentin Rautenstrauch, René Challand, Raphaël Churlaud, Robert Harold Morris, Eric Brazi, Hubert Mimoun, Kamaluddin Abdur-Rashid
  • Catalytic hydrogenation processes
    Publication number: 20050245748
    Abstract: The catalysts of formula (II): [Ru(L)m(L?)wXY], wherein X and Y represent simultaneously or independently a hydrogen or halogen atom, a hydroxy group, or an alkoxy, carboxyl or other anionic radical, m is 1 or 2, w is 1 when m is 1 and w is 0 when m is 2, L is a phosphino-amine or phosphino-imine bidentate ligand and L? a diphosphine, are useful for the hydrogenation of substrates having a carbon-hetero atom double bond.
    Type: Application
    Filed: September 11, 2001
    Publication date: November 3, 2005
    Inventors: Valentin Rautenstrauch, Rene Challand, Eric Brazi, Hubert Mimoun, Kamaluddin Abdur-Rashid, Robert Morris, Raphaël Churlaud
  • Catalytic hydrogenation processes
    Publication number: 20040063966
    Abstract: The catalysts of formula (II): [Ru(L)m(L′)wXY], wherein X and Y represent simultaneously or independently a hydrogen or halogen atom, a hydroxy group, or an alkoxy, carboxyl or other anionic radical, m is 1 or 2, w is 1 when m is 1 and w is 0 when m is 2, L is a phosphino-amine or phosphino-imine bidentate ligand and L′ a diphosphine, are useful for the hydrogenation of substrates having a carbon-hetero atom double bond.
    Type: Application
    Filed: September 3, 2003
    Publication date: April 1, 2004
    Inventors: Valentin Rautenstrauch, Rene Challand, Eric Brazi, Hubert Mimoun, Kamaluddin Abdur-Rashid
  • Method and device for liberating a fragrant or disinfectant substance
    Publication number: 20020090318
    Abstract: A method and apparatus for dispersing a substance, in particular a fragrant or disinfectant substance, into a volume of air comprises a first step of circulating a volume of air inside a conduit and a second step of liberating the substance into the conduit. Circulation of the volume of air ensures ventilation for example of a vehicle, a restaurant, a cinema, or furthermore, a hospital. The substance liberated into the conduit is dispersed in the volume of air by forced convection and leads to a perfumed environment or to air containing an active disinfectant principle. A cylinder is positioned outside the conduit containing the substance to be dispersed and a compressed propellant gas, and the propellant gas is expanded so as to inject the substance into the conduit.
    Type: Application
    Filed: February 8, 2002
    Publication date: July 11, 2002
    Inventors: Rene Challand, Alain Trachsel, Josiane Trachsel