Patents by Inventor Sylvie Lavault

Sylvie Lavault 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).

  • Patent number: 6642176
    Abstract: The invention concerns a novel composition comprising a herbicide of the glyphosate family, a herbicide of the isoxazole family and a biological activator, wherein the herbicide of the glyphosate family is selected among N-phosphomethylglycine (glyphosate acid), N-phosphomethylglycine alkaline metal salts, N-phosphomethylglycine ammonium salts and N-phosphomethylglycine trimethyisulphonium salts (sulphosate), and wherein the biological activator consists essentially of an ammonium sulphate. The invention also concerns a method for agronomic treatment of plants tolerant to glyphosate family herbicides and to isoxazole family herbicides to eliminate weeds which consists in applying in a field containing said tolerant plants an appropriate amount of the inventive composition.
    Type: Grant
    Filed: July 30, 2001
    Date of Patent: November 4, 2003
    Assignee: Bayer CropScience S.A.
    Inventors: Gilbert Antoine Perez, Louis Pillet, Jean-Claude Febvre, Sylvie Lavault
  • Publication number: 20020001569
    Abstract: Abrasive particles which can be used particularly as an abrasive agent in toothpaste compositions and which comprises a core of abrasive calcium-containing material, e.g. a precipitated calcium carbonate, which is coated with a fluorine-compatibilizing hydrophobic coating, e.g. sodium stearate, are provided. Methods of obtaining these abrasive particles, as well as their use in toothpaste compositions are also provided. In these abrasive particles, the compatibility between the abrasive agent and the fluorinated agent is significantly improved.
    Type: Application
    Filed: July 19, 2001
    Publication date: January 3, 2002
    Inventors: Adrien Dromard, Sylvie Lavault
  • Patent number: 5721297
    Abstract: Novel piperidyl organosiloxanes, well adapted for the light/UV-stabilization of a wide variety of polymer substrates, e.g.
    Type: Grant
    Filed: July 1, 1992
    Date of Patent: February 24, 1998
    Assignee: Rhone-Poulenc Chimie
    Inventors: Michel Gay, Sylvie Lavault
  • Patent number: 5663222
    Abstract: Novel piperidyl organosiloxanes, well adapted for the light/UV-stabilization of a wide variety of polymer substrates, e.g.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: September 2, 1997
    Assignee: Rhone-Poulenc Chimie
    Inventors: Michel Gay, Sylvie Lavault
  • Patent number: 5352757
    Abstract: The present invention relates to new sulfur compounds which are polyol esters of mercaptocarboxylic acids. It also relates to the use of these sulfur esters for preparing polymers exhibiting a refractive index higher than 1.50. The manufacture of optical discs and of waveguides may be mentioned among the optical applications of these polymers.
    Type: Grant
    Filed: September 16, 1992
    Date of Patent: October 4, 1994
    Assignee: Rhone-Poulenc Chimie
    Inventors: Sylvie Lavault, Gerard Velleret
  • Patent number: 5200444
    Abstract: Polymer matrices, e.g., halogenated polymers such as PVC, polyolefins, polystyrenes, polyalkadienes, etc., are stabilized against the adverse effects of heat and light, by incorporating therein an effective stabilizing amount of a compound of the formula (I): ##STR1## in which n is a number ranging from 1 to 3, and R is a methyl radical or a hydrogen atom.
    Type: Grant
    Filed: December 13, 1990
    Date of Patent: April 6, 1993
    Assignee: Rhone-Poulenc Chimie
    Inventors: Michel Gay, Sylvie Lavault
  • Patent number: 5124456
    Abstract: Novel dihydropyridine compounds bearing substituted piperidyl substituents are effective heat/light stabilizers for a wide variety of polymer substrates, e.g., for halopolymers such as PVC, and are also effective anti-UV agents and antioxidants for such polymers as polyolefins, polystyrenes, polyalkadienes, polyurethanes, polyamides, polyesters, polycarbonates, polysulfones, polyethersulfones, polyetherketones, acrylic polymers, or copolymers or mixtures thereof.
    Type: Grant
    Filed: October 2, 1990
    Date of Patent: June 23, 1992
    Assignee: Rhone-Poulenc Chimie
    Inventors: Louis Carette, Michel Gay, Sylvie Lavault, Gilles Mur
  • Patent number: 5124380
    Abstract: Compounds containing a 2,2,6,6-tetramethylpiperidinyl group and a method of making them. The compounds are effective for the protection of organic polymers against degradation due to light and ultraviolet radiation.
    Type: Grant
    Filed: July 3, 1991
    Date of Patent: June 23, 1992
    Assignee: Rhone-Poulenc Chimie
    Inventors: Michel Gay, Sylvie Lavault
  • Patent number: 5034533
    Abstract: Polymer matrices, e.g., halogenated polymers such as PVC, polyolefins, polystyrenes, polyalkadiences, etc., are stabilized against the adverse effects of heat and light, by incorporating therein an effective stabilizing amount of a compound of the formula (I): ##STR1## in which n is a number ranging from 1 to 3, and R is a methyl radical or a hydrogen atom.
    Type: Grant
    Filed: May 31, 1990
    Date of Patent: July 23, 1991
    Assignee: Rhone-Poulenc Chimie
    Inventors: Michael Gay, Sylvie Lavault