Patents by Inventor John R. N. Davison

John R. N. Davison 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).

  • Transformed yeasts for producing lysozyme, plasmids used for this transformation, method of producing lysozyme
    Patent number: 5336609
    Abstract: Transformed yeasts comprising DNA which include at least one copy of a fragment coding for a 1,4-.beta.-N-acetylmuramidase which is expressed in the yeasts as the corresponding active protein, and a process for preparing lysozyme by growing said transformed yeasts.
    Type: Grant
    Filed: December 5, 1989
    Date of Patent: August 9, 1994
    Assignee: Labofina, S.A.
    Inventors: Jacques Oberto, John R. N. Davison
  • Promoters for the expression of foreign genes in yeast, plasmids comprising them, and use thereof for the production of polypeptides
    Patent number: 4990446
    Abstract: Promoters capable of ensuring expression in yeast of genes coding for heterologous polypeptides are disclosed, which comprise a DNA fragment or mutants or sub-fragments thereof, said promoter comprising a definite nucleotide sequence commencing with an EcoRI site and terminated by another restriction site. Also disclosed are vector plasmids containing the promoters, transformed yeasts comprising these plasmids, and a process for preparing polypeptides and especially a 1,4-.beta.-N-acetylmuramidase.
    Type: Grant
    Filed: December 5, 1985
    Date of Patent: February 5, 1991
    Assignee: Labofina, S.A.
    Inventors: Jacques Oberto, John R. N. Davison
  • Cloning vectors comprising a restriction site bank and the construction thereof
    Patent number: 4657858
    Abstract: Vectors are disclosed for cloning any foreign DNA in prokaryotic and eukaryotic organisms, which vectors comprise a restriction site bank containing a large number of unique restriction sites. The disclosed vectors permit the cloning of large DNA fragments and complete genes without the risk of unwanted DNA cleavage by restriction enzymes. Also disclosed are methods for preparing the aforementioned vectors and processes using the vectors for the cloning of DNA, for the production of polypeptides, and the like.
    Type: Grant
    Filed: May 11, 1984
    Date of Patent: April 14, 1987
    Assignee: Labofina, S.A.
    Inventor: John R. N. Davison