Patents by Inventor Marie-Pascale Perritaz

Marie-Pascale Perritaz 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).

  • Azomethine dye chromophores
    Patent number: 11344489
    Abstract: A composition for dyeing keratin fibres comprising a. at least one azomethine compound selected from compounds (3) and (4) and b. water. The composition may be used in a process for dyeing keratin fibres or, with simultaneous or sequential application of a composition comprising one or more oxidising agents, in a process for lightening keratin fibres.
    Type: Grant
    Filed: November 21, 2019
    Date of Patent: May 31, 2022
    Assignee: BASF SE
    Inventors: Frank Bachmann, Beate Froehling, Christian Cremer, Marie-Pascale Perritaz, Volker Wendel
  • DICHROIC AZO-AZOMETHINE DYES FOR LIQUID CRYSTAL COMPOSITIONS
    Publication number: 20220098412
    Abstract: Dichroic azo-azomethine dyes of formula (A) or (B), wherein Ar1 to Ar10 are specific (hetero)aromatic moieties and L is a linking group, as defined in the present claims, a dichroic dye mixture comprising said azo-azomethine dyes and a process for preparing the dyes are provided. The dyes are well suited for combination with liquid crystal material for use, inter alia, in a light absorption anisotropic element, for example, in a switchable optical device or an optically anisotropic film.
    Type: Application
    Filed: January 17, 2020
    Publication date: March 31, 2022
    Inventors: Leonhard FEILER, Thomas RUCH, Frank BACHMANN, Marie-Pascale PERRITAZ, Gerardus DE KEYZER
  • IR ABSORBING NAPHTHALOCYANINE AND PHTHALOCYANINE CHROMOPHORES
    Publication number: 20220098413
    Abstract: The present invention relates to naphthalocyanine and phthalocyanine chromophores of formula (I), their use as almost colourless IR absorbers, for optical filter applications, especially for plasma display panels, or for laser welding of plastics. The compounds may be used in compositions for inks, paints and plastics, especially in a wide variety of printing systems and are particularly well-suited for security applications.
    Type: Application
    Filed: February 10, 2020
    Publication date: March 31, 2022
    Inventors: Hans REICHERT, Rene FISCHER, Marie-Pascale PERRITAZ, Helmut REICHELT, Oliver SEEGER, Korinna DORMANN
  • Azomethine Dye Chromophores
    Publication number: 20220016007
    Abstract: A composition for dyeing keratin fibres comprising a. at least one azomethine compound selected from compounds (3) and (4) and b. water. The composition may be used in a process for dyeing keratin fibres or, with simultaneous or sequential application of a composition comprising one or more oxidising agents, in a process for lightening keratin fibres.
    Type: Application
    Filed: November 21, 2019
    Publication date: January 20, 2022
    Inventors: Frank Bachmann, Beate Froehling, Christian Cremer, Marie-Pascale Perritaz, Volker Wendel