Patents by Inventor John R. Brocklehurst

John R. Brocklehurst 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).

  • Patent number: 4678659
    Abstract: A therapeutic material is contained in a water soluble glass having a dissolution rate that is distinctly pH sensitive, the ratio of dissolution rates between pH 2 and pH 6 being greater than 60 to 1. The glass incorporates phosphorus pentoxide as the glass former and an alkali metal oxide and one or more alkaline earth metal oxides as glass modifiers.
    Type: Grant
    Filed: February 13, 1986
    Date of Patent: July 7, 1987
    Assignee: STC, plc
    Inventors: Cyril F. Drake, John R. Brocklehurst
  • Patent number: 4626074
    Abstract: A relatively shallow arrangement for providing illumination for a light scattering type display cell employs a transparent sheet in optical contact with the front surface of the cell and a matte black sheet out of contact with the rear surface. The assembly acts as a light guide for light launched into at least one of the transparent sheet from at least one strip lamp. The only light escaping from the display, etc. in the direction of the observer is a proportion of that scattered into non-guided directions by regions of liquid crystal layer selectively set into a scattering state.
    Type: Grant
    Filed: April 30, 1984
    Date of Patent: December 2, 1986
    Assignee: International Standard Electric Corporation
    Inventors: William A. Crossland, John R. Brocklehurst, Peter J. Ayliffe, Arthur Atkinson
  • Patent number: 4449981
    Abstract: A device for the controlled release of an active material into a liquid medium comprises a liquid soluble body having an array of cavities therein containing the active material. The body may be enclosed in a casing of a material having a relatively low dissolution rate and provided with means, e.g. an aperture whereby a portion of the body can be exposed to dissolving attack by the liquid medium. The body is so constructed that the cavity contents are released sequentially and at a predetermined rate.
    Type: Grant
    Filed: June 10, 1981
    Date of Patent: May 22, 1984
    Assignee: ITT Industries, Inc.
    Inventors: Cyril F. Drake, John R. Brocklehurst