Patents by Inventor Isabelle Leray

Isabelle Leray 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).

  • Lead assay
    Patent number: 9366629
    Abstract: Process for metering lead in a sample of original water, in which is placed a sample of the water of which at least a substantial portion of the colloidal and organic material is passed in solution (sample of pretreated water), having: a first stage, starting from a sample of pretreated water with an adjusted pH, the lead is concentrated and the other parasitic ions are at least partially eliminated to obtain a sample of water that is concentrated with lead and substantially lacking in other parasitic ions (sample of lead-concentrated water); and a second stage in which, starting from the sample of lead-concentrated water, the sample of lead-concentrated water is mixed with a selective, lead-sensitive fluorescent probe whose fluorescence intensity/lead metering function is known; then, the thus produced water/fluorescent probe mixture is excited by the light, and the fluorescence intensity of the thus excited water/fluorescent probe mixture is collected optically; finally, starting from the thus detected fluo
    Type: Grant
    Filed: December 8, 2009
    Date of Patent: June 14, 2016
    Assignee: CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE—CNRS
    Inventors: Jacques Delaire, Isabelle Leray, Jean-Pierre Lefevre, Liyun Zhao, Ting Wu
  • LEAD ASSAY
    Publication number: 20110294222
    Abstract: Process for metering lead in a sample of original water, in which is placed a sample of the water of which at least a substantial portion of the colloidal and organic material is passed in solution (sample of pretreated water), having: a first stage, starting from a sample of pretreated water with an adjusted pH, the lead is concentrated and the other parasitic ions are at least partially eliminated to obtain a sample of water that is concentrated with lead and substantially lacking in other parasitic ions (sample of lead-concentrated water); and a second stage in which, starting from the sample of lead-concentrated water, the sample of lead-concentrated water is mixed with a selective, lead-sensitive fluorescent probe whose fluorescence intensity/lead metering function is known; then, the thus produced water/fluorescent probe mixture is excited by the light, and the fluorescence intensity of the thus excited water/fluorescent probe mixture is collected optically; finally, starting from the thus detected fluo
    Type: Application
    Filed: December 8, 2009
    Publication date: December 1, 2011
    Applicant: Centre National De La Recherche Scientifique CNRS
    Inventors: Jacques Delaire, Isabelle Leray, Jean-Pierre Lefevre, Liyun Zhao, Ting Wu