Patents by Inventor Peter Barry

Peter Barry 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).

  • Publication number: 20020067485
    Abstract: Provided herein is a device useful for measuring the fineness of a dispersion of particles in a liquid vehicle. A device according to the invention includes a light source, a means for mounting a film of said vehicle of increasing thickness, and a means for producing an electronic image of said film, in which these elements are positioned relative to one another so that the light the imaging means receives is predominantly light reflected from regions of the surface of said film which are disrupted by protruding particles. This is achieved by configuring the device so that the image producing means is aimed into the dark field below the light source, with the image producing means being directed generally at an angle below the angle of reflection of any light reflected from undisrupted regions of the surface of the film.
    Type: Application
    Filed: December 14, 2001
    Publication date: June 6, 2002
    Applicant: Tioxide Group Services Limited
    Inventors: James Henry Hatfield, Peter Barry Howard, Edmund John Lawson, Alastair Orr Mackenzie
  • Patent number: 4052223
    Abstract: A process for the production of the highly durable titanium dioxide pigment in which the pigment is coated with a phosphate, a silicate and a hydrous oxide of zirconium and aluminium in specified carefully controlled amounts and order of deposition.
    Type: Grant
    Filed: August 3, 1976
    Date of Patent: October 4, 1977
    Assignee: Tioxide Group Limited
    Inventor: Peter Barry Howard
  • Patent number: 4052224
    Abstract: A process for the treatment of titanium dioxide pigment which involves adding to a pigment slurry a compound of phosphorus, of aluminium, of zirconium, of titanium and of silicon, adjusting the pH of the slurry to a value of from 3.5 to 4.5, followed by adding to the slurry a compound of phosphorus of an alkaline reacting compound of aluminium prior to the addition of mineral acid to adjust the pH of the slurry to a value of 6.5 to 8.
    Type: Grant
    Filed: June 4, 1976
    Date of Patent: October 4, 1977
    Assignee: Tioxide Group Limited
    Inventor: Peter Barry Howard
  • Patent number: 4052222
    Abstract: A process for the treatment of titanium dioxide pigment in which there is added to a slurry of the pigment a compound of silicon, of aluminium, of zirconium and of titanium, changing the pH of the slurry to 7.5 to 8.5 prior to adding a compound of silicon, an acidic compound of aluminium and an alkaline compound of aluminium, thereby producing a coated pigment.
    Type: Grant
    Filed: June 4, 1976
    Date of Patent: October 4, 1977
    Assignee: Tioxide Group Limited
    Inventor: Peter Barry Howard
  • Patent number: 4044126
    Abstract: An antiinflammatory steroid exhibiting a tendency to crystal growth in suspension in aerosol propellants is contacted with a halogenated hydrocarbon to form a crystalline solvate, which, after removal of some or all of the propellant from the crystals, is reduced to a particle size permitting inhalation into the human bronchial system when dispersed as an aerosol, the micronized crystalline solvate not thereafter exhibiting crystal growth in the aerosol propellant. The solvate is a new composition of matter which has been characterized by I.R. spectra and the aerosol formulation prepared therefrom has valuable therapeutic properties, particularly in the treatment of asthma.
    Type: Grant
    Filed: July 9, 1976
    Date of Patent: August 23, 1977
    Assignee: Allen & Hanburys Limited
    Inventors: Peter Barry Cook, John Harold Hunt
  • Patent number: D452995
    Type: Grant
    Filed: July 17, 2000
    Date of Patent: January 22, 2002
    Inventor: Michael Peter Barry