Patents by Inventor Henri Heslot

Henri Heslot 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).

  • ARS sequence which is efficacious in yarrowia lipolytica
    Patent number: 5212087
    Abstract: The present invention relates to ars sequences which are efficacious in Yarrowia lipolytica, as well as to plasmids carrying these sequences.The strains of Y. lipolytica transformed with the said plasmids may be used in fermentation processes enabling proteins of industrial importance to be prepared.
    Type: Grant
    Filed: January 27, 1989
    Date of Patent: May 18, 1993
    Assignee: Institut National de la Recherche Agronomique (INRA)
    Inventors: Phillippe Fournier, Claude Gaillardin, Bernard Kudla, Henri Heslot
  • Cloning and expression vector, yeast transformed by such vector and applications thereof
    Patent number: 4806472
    Abstract: Cloning and expression vector of a heterologous gene in a yeast, characterized in that it comprises at least; all or part of DNA of the plasmide k.sub.1 of Kluyveromyces lactis, a DNA segment incorporating the heterologous gene as well as the sequences providing the expression of said gene in said yeast.
    Type: Grant
    Filed: December 22, 1986
    Date of Patent: February 21, 1989
    Assignee: Societe Nationale Elf Aquitane
    Inventors: Laurence de Louvencourt, Hiroshi Fukuhara, Henri Heslot, Micheline Wesolowski
  • Hybrid plasmids and microorganisms containing them
    Patent number: 4387162
    Abstract: A hybrid plasmid comprising at least the DNA of a bacterial plasmid, all or part of the DNA of the 2.mu. plasmid of yeast and a segment of DNA including the gene URA.sub.3.sup.+ of yeast. These plasmids are useful as vectors of exogenous DNA in yeasts.
    Type: Grant
    Filed: November 14, 1979
    Date of Patent: June 7, 1983
    Assignee: Agence Nationale de Valorisation de la Recherche (ANVAR)
    Inventors: Michel Aigle, Hughes Blanc, Philippe Fournier, Claude Gerbaud, Michel Guerineau, Henri Heslot, Francois Lacroute
  • Process for obtaining hybrid strains of yeasts
    Patent number: 4172764
    Abstract: The cell walls are removed from two distinct auxotropic mutant strains of yeast. The protoplasts thus obtained are fused and the cell walls regenerated. The strains obtained are cultured on a medium where the original auxotrophs cannot develop and the hybrid or recombinant strains are recovered. The strains obtained by the process are useful for preparing yeast proteins.
    Type: Grant
    Filed: September 20, 1977
    Date of Patent: October 30, 1979
    Assignee: Agence Nationale de Valorisation de la Recherche (ANVAR)
    Inventors: Henri Heslot, Anne Provost, Philippe Fournier