Patents by Inventor Edward George Gazzard

Edward George Gazzard 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).

  • Biocidal compositions
    Patent number: 3970755
    Abstract: Biocidal compositions comprising certain quaternary ammonium compounds and 1,2-benzisothiazolin-3-ones. The combination has a greater biocidal activity than would be expected from either component alone. Also methods for protecting aqueous media against infection by micro-organisms by addition of the said compositions to the media, and methods for protecting paint films and wood against fungal attack using the said compositions and anti-fungal agents.
    Type: Grant
    Filed: April 25, 1974
    Date of Patent: July 20, 1976
    Assignee: Imperial Chemical Industries Limited
    Inventors: Edward George Gazzard, Michael Singer
  • N-(N.sup.1 -1.sup.1 -Benzisothiazolin-3.sup.1 -3.sup.1 -onylcarbonylthio)-1,2-benzisothiazolin-3-one
    Patent number: 3950349
    Abstract: The invention provides certain N-thio substituted isothiazolin-3-one compounds and process for their manufacture, and includes their use in protecting media which are susceptible to infection by micro-organisms against such infection and the suppression of infection in media already infected. These compounds provide a quicker kill of micro-organisms than the parent isothiazolin-3-ones.
    Type: Grant
    Filed: April 4, 1974
    Date of Patent: April 13, 1976
    Assignee: Imperial Chemical Industries Limited
    Inventors: Alan John Buckley, Edward George Gazzard, Michael Singer, John Anthony Taylor