Patents by Inventor Douglas J. Leisy

Douglas J. Leisy 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).

  • Insecticidal plectoxins from plectreurys tristis
    Patent number: 6265376
    Abstract: Novel plectoxins isolated from the Primitive Hunting Spider, Plectreurys tristis are described, and their amino acid sequences are presented. These are toxic to various groups of insects, including Lepidopterans. A particularly potent plectoxin is Plt-VI. The plectoxins may be cloned into a baculovirus vector and hasten its speed of kill.
    Type: Grant
    Filed: April 25, 1995
    Date of Patent: July 24, 2001
    Assignee: Novartis AG
    Inventors: Douglas J. Leisy, Gary B. Quistad, Wayne S. Skinner
  • Insecticidal toxins from the parasitic wasp bracon hebeter
    Patent number: 6251862
    Abstract: Novel polypeptides are isolated from the venom of the parasitic wasp, Bracon hebetor, and are designated Brh-I to Brh-V. These polypeptides are paralytic and/or toxic to insects. The entire amino acid sequence of Brh-I and the DNA encoding it is also determined. These polypeptides may be cloned into a baculovirus, and used for insect control.
    Type: Grant
    Filed: May 31, 1996
    Date of Patent: June 26, 2001
    Assignee: Syngenta Participations AG
    Inventors: Gary B. Quistad, Douglas J. Leisy
  • Insecticidal toxins from the parastic wasp, bracon hebetor
    Patent number: 5554592
    Abstract: Novel polypeptides are isolated from the venom of the parasitic wasp, Bracon hebetor, and are designated Brh-I to Brh-V. These polypeptides are paralytic and/or toxic to insects. The entire amino acid sequence of Brh-I and the DNA encoding it is also determined. These polypeptides may be cloned into a baculovirus, and used for insect control.
    Type: Grant
    Filed: August 10, 1994
    Date of Patent: September 10, 1996
    Assignee: Sandoz Ltd.
    Inventors: Gary B. Quistad, Douglas J. Leisy
  • Insecticidal plectoxins from Plectreurys tristis
    Patent number: 5470735
    Abstract: Novel plectoxins isolated from the Primitive Hunting Spider, Plectreurys tristis are described, and their amino acid sequences are presented. These are toxic to various groups of insects, including Lepidopterans. A particularly potent plectoxin is Plt-VI. The plectoxins may be cloned into a baculovirus vector and hasten its speed of kill.
    Type: Grant
    Filed: March 30, 1994
    Date of Patent: November 28, 1995
    Assignee: Sandoz Ltd.
    Inventors: Douglas J. Leisy, Gary B. Quistad, Wayne S. Skinner