Patents by Inventor Brian H. Armstead

Brian H. Armstead 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).

  • Calcined silicas and their use in beer clarification
    Patent number: 4515821
    Abstract: Calcined silica gels have been prepared and found to have improved properties for clarification of beers to prevent or reduce haze formation. The calcined silica gels are defined in terms of their physical properties and also in respect of the surface silanol groupings in terms of the infra-red spectrum peaks.
    Type: Grant
    Filed: September 8, 1983
    Date of Patent: May 7, 1985
    Assignee: Internationale Octrooi Maatschappij "Octropa"
    Inventors: Brian H. Armstead, James P. Quinn