Patents by Inventor Christopher G. Booth

Christopher G. Booth 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).

  • Ocular treatment
    Patent number: 5053000
    Abstract: A method of administering less than 20 .mu.l of a solution of an ophthalmically effective substance to the eye characterized in that the formulation has a viscosity and resistivity which makes it suitable for electrodynamic spraying, and the formulation is supplied to a spray nozzle wherein a sufficiently large electrical potential, relative to earth, is applied to the formulation that a sufficient electrical gradient is provided at the spray nozzle to atomize the formulation as a spray of electrically charged droplets. Also liquid solution formulations of opthalmically effective substances for use in the method of the invention; and electrodynamic spraying apparatus, convenient for hand held use, for use in the method of the invention.
    Type: Grant
    Filed: April 26, 1990
    Date of Patent: October 1, 1991
    Assignee: Imperial Chemical Industries PLC
    Inventors: Christopher G. Booth, Raymond C. Rowe
  • Ocular treatment
    Patent number: 4952212
    Abstract: A method of administering less than 20 .mu.l of a solution of an ophthalmically effective substance to the eye characterized in that the formulation has a viscosity and resistivity which makes it suitable for electrodynamic spraying, and the formulation is supplied to a spray nozzle wherein a sufficiently large electrical potential, relative to earth, is applied to the formulation that a sufficient electrical gradient is provided at the spray nozzle to atomize the formulation as a spray of electrically charged droplets. Also liquid solution formulations of ophthalmically effective substances for use in the method of the invention; and electrodynamic spraying apparatus, convenient for hand held use, for use in the method of the invention.
    Type: Grant
    Filed: January 23, 1989
    Date of Patent: August 28, 1990
    Assignee: Imperial Chemical Industries PLC
    Inventors: Christopher G. Booth, Raymond C. Rowe