Patents by Inventor Petrus Wilhelmus Maria Van Dijck

Petrus Wilhelmus Maria Van Dijck 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).

  • Intersexual heterozygous phycomyces
    Patent number: 5643719
    Abstract: The present invention discloses intersexual heterozygous Phycomyces strains. These strains show an improved .beta.-carotene productivity and an increased stability when compared with both the wild type and heterokaryotic Phycomyces strains. The present invention also discloses a method for obtaining Phycomyces transformants without using selection markers. Furthermore, a process is provided for manufacturing .beta.-carotene comprising the use of intersexual heterozygous Phycomyces strains in a submerged culture.
    Type: Grant
    Filed: February 2, 1994
    Date of Patent: July 1, 1997
    Assignee: Gist-brocades, N.V.
    Inventors: Enrique Cerda-Olmedo, Bina Jamnadas Mehta, Petrus Wilhelmus Maria Van Dijck, Bertus Pieter Koekman