Patents Assigned to The Confederated Tribes of the Colville Reservation
  • Patent number: 5455219
    Abstract: A biologically pure culture of Pythium rostratum is disclosed which produces zoosporangia which produce zoospores capable of killing knapweed. Also disclosed is a method for killing knapweed, comprising: (a) growing Pythium rostratum which selectively kills knapweed on a carrier saturated with a liquid nutrient capable of supporting Pythium rostratum growth and the production of zoosporangia; and (b) applying the Pythium rostratum carrier to knapweed-infested land under moisture and temperature conditions sufficient to support Pythium rostratum growth and zoospore release by the zoosporangia, such that the zoospores are produced which are capable of killing knapweed.
    Type: Grant
    Filed: December 3, 1993
    Date of Patent: October 3, 1995
    Assignee: Confederated Tribes of the Colville Reservation
    Inventor: Eduardo E. Trujillo
  • Patent number: 5112381
    Abstract: A biologically pure culture of Pythium rostratum is disclosed which produces zoosporangia which produce zoospores capable of killing knapweed. Also disclosed is a method for killing knapweed, comprising: (a) growing Pythium rostratum which selectively kills knapweed on a carrier saturated with a liquid nutrient capable of supporting Pythium rostratum growth and the production of zoosporangia; and (b) applying the Pythium rostratum carrier to knapweed-infested land under moisture and temperature conditions sufficient to support Pythium rostratum growth and zoospore release by the zoosporangia, such that the zoospores are produced which are capable of killing knapweed.
    Type: Grant
    Filed: February 14, 1990
    Date of Patent: May 12, 1992
    Assignee: The Confederated Tribes of the Colville Reservation
    Inventor: Eduardo E. Trujillo