Patents by Inventor Stephan Andreas Ohl

Stephan Andreas Ohl 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).

  • Plasmids for plant transformation and method for using the same
    Patent number: 7029908
    Abstract: The invention provides novel Ti-plasmid vectors for Agrobacterium-medicated plant cell transformation. Plamsids of the invention are constructed with a DNA sequence (ie., a negative selectable maker or a DNA sequence that inhibits DNA unwinding) flanking the T-DNA bordered gene of interest that reduces or eliminates the occurrence of transformants with vector read-through DNA sequence. The invention also provides methods of plant cell transformation utilizing these novel vectors.
    Type: Grant
    Filed: December 22, 1999
    Date of Patent: April 18, 2006
    Assignee: Syngenta Mogen BV
    Inventors: Maarten Hendrik Stuiver, Anne Silene Ponstein, Stephan Andreas Ohl, Oscar Johanna Maria Goddijn, Lambertus Henricus Simons, Bernardus Martinus Maria Dekker, Sietske Hoekstra, Hendrik Tigelaar, Nicolas Elzinga
  • Nematode-inducible regulatory DNA sequences
    Patent number: 6395963
    Abstract: Nematode-inducible promoter sequences are disclosed. These sequences can be used for expressing DNA sequences in plant cells. Chimeric DNA constructs comprising the nematode-inducible promoter sequences operably linked to DNA to be expressed in plant cells are also disclosed. Plants comprising the chimeric DNA are provided.
    Type: Grant
    Filed: May 17, 1999
    Date of Patent: May 28, 2002
    Assignee: Zeneca Limited
    Inventors: Stephan Andreas Ohl, Peter Christiaan Sijmons, Frédérique Marianne Klein-Van der Lee, Oscar Goddijn, Joke Klap
  • Antifungal proteins, DNA coding therefor, and hosts incorporating same
    Patent number: 6291647
    Abstract: The present invention provides an isolated protein obtainable from a plant source which has anti-Phytophthora activity and a molecular weight of about 60±5 kDa as judged by SDS PAGE-electrophoresis, an isolated DNA sequence comprising an open reading frame capable of encoding a protein according to the invention, preferably characterized in that it comprises an open reading frame which is capable of encoding a protein as represented by amino acids 1 to 540 of SEQ ID NO: 6, or the precursor of said protein, and DNA capable of hybridising therewith under stringent conditions. The invention further comprises plants incorporating chimeric DNA capable of encoding a protein according to the invention, and wherein the protein is expressed. Also methods are provided for combatting fungi, especially Phytophthora infestans, using a protein or a host cell capable of producing the protein.
    Type: Grant
    Filed: November 20, 1996
    Date of Patent: September 18, 2001
    Assignee: Syngenta Mogen B.V.
    Inventors: Leo Sjoerd Melchers, Anne Silene Ponstein, Saskia Kroon-Swart, Johanna Pieternella Els Van Deventer-Troost, Stephan Andreas Ohl, Alexandra Aleida Bres-Vloemans, Jürgen Logemann, Marianne Beatrix Sela-Buurlage
  • Nematode-inducible plant gene promoter
    Patent number: 6262344
    Abstract: An isolated DNA fragment that promotes root knot or cyst nematode indcuible transcription of a coding sequence downstream of and operably linked to the fragment in at least an Arabidopsis thaliana plant and a chimeric DNA sequence including the DNA fragment. Also, methods for the use of the DNA fragment.
    Type: Grant
    Filed: April 26, 1999
    Date of Patent: July 17, 2001
    Assignee: Syngenta Mogen B.V.
    Inventors: Stephan Andreas Ohl, Peter Christiaan Sijmons, Frederique Marianne Van Der Lee, Oscar Johannes Maria Goddijn, Joke Johanna Catharina Klap