Patents by Inventor Gerald K. Edmondson

Gerald K. Edmondson 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).

  • Gas filter
    Patent number: 4707467
    Abstract: A filter for noxious gases such as sulphur dioxide or nitrogen dioxide comprises a keratinous fibre substrate within which is deposited an effective amount of manganese dioxide. The fibres, preferably sheep's wool, may be in the form of a fibrous bat and the manganese dioxide is deposited from acidified permanganate solution. The filter is most effective when maintained in the wet state.
    Type: Grant
    Filed: May 27, 1986
    Date of Patent: November 17, 1987
    Assignee: Wool Development International Limited
    Inventors: Ladislav Benisek, Gerald K. Edmondson