Patents by Inventor Merlin Evelyn Harry Howden

Merlin Evelyn Harry Howden 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 toxins derived from funnel web (atrax or hadronyche) spiders
    Patent number: 5959182
    Abstract: The invention relates to insect viruses and plants which express an exogenous polypeptide derived from spiders of the genus Atrax or Hadronyche, which polypeptide is toxic to insects. The polypeptide has a molecular weight of approximately 4000 amu,) containing 36-37 Gino acids, and is capable of forming three intrachain disulfide bridges. Polyiucleotides which encode the polypeptide, insectidoidal compositions and methods of controlling insect infestation of crops are also included.
    Type: Grant
    Filed: September 18, 1997
    Date of Patent: September 28, 1999
    Assignee: Zeneca Limited
    Inventors: Ronald Keith Atkinson, Merlin Evelyn Harry Howden, Margaret Isabel Tyler, Edward Joseph Vonarx
  • Insecticidal toxins derived from funnel web (atrax or hadronyche) spiders
    Patent number: 5763568
    Abstract: The invention relates to toxins from venom of Australian funnel web spider species. Eight toxins are specifically exemplified. The toxins have a molecular weight of approximately 4000 amu., containing 36-37 amino acids, and are capable of forming 3 intrachain disulphide bridges. Polynucleotides which encode the toxins, insect viruses and plants which express the toxins and variants of the toxins are also included.
    Type: Grant
    Filed: July 17, 1996
    Date of Patent: June 9, 1998
    Assignee: Zeneca Limited
    Inventors: Ronald Keith Atkinson, Merlin Evelyn Harry Howden, Margaret Isabel Tyler, Edward Joseph Vonarx