Patents by Inventor Risto Tapio Tahvonen

Risto Tapio Tahvonen 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).

  • Fungus Gliocladium catenulatum for biological control of plant diseases
    Patent number: 5968504
    Abstract: The present invention relates to biological control of plant diseases and concerns new Gliocladium catenulatum fungi and their use for controlling fungal infections in plants. The invention concerns also compositions comprising new strains of Gliocladium catenulatum and their use to said purpose.
    Type: Grant
    Filed: July 14, 1997
    Date of Patent: October 19, 1999
    Assignee: Kemira Agro Oy
    Inventors: Risto Tapio Tahvonen, Milja Tuulikki Keskinen, Marja-Leena Lahdenpera, Pekka Tapani Seiskari, Esa Petri Teperi, Ulla Anita Tuominen, Hanna Helena Avikainen
  • Microorganisms for biological control of fungal infections and pests of plants
    Patent number: 5811090
    Abstract: The present invention relates to biological control of plant diseases and concerns new microorganisms belonging to the genus Nectria, as well as their use for controlling fungal infections in plants. The invention also concerns compositions comprising new strains of the genus Nectria and their use for these purposes. The invention also provides a method of screening effective control organisms from microbial strains isolated from soil.
    Type: Grant
    Filed: September 23, 1996
    Date of Patent: September 22, 1998
    Assignee: Kemira Agro Oy
    Inventors: Risto Tapio Tahvonen, Milja Tuulikki Keskinen, Marja-Leena Lahdenpera, Pekka Tapani Seiskari, Esa Petri Teperi, Ulla Anita Tuominen