Patents by Inventor Gareth Wakefield

Gareth Wakefield 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).

  • PARTICLES FOR THE TREATMENT OF CANCER IN COMBINATION WITH RADIOTHERAPY
    Publication number: 20200276230
    Abstract: The invention provides a particle comprising a first semiconductor and a second semiconductor wherein the first semiconductor forms a heterojunction with the second semiconductor. The invention also provides a pharmaceutical composition comprising the particles, and relates to uses of the particles and composition in the treatment of cancer in combination with radiotherapy.
    Type: Application
    Filed: November 16, 2018
    Publication date: September 3, 2020
    Applicant: Xerion Healthcare Limited
    Inventors: Matthew Ronald Phillip Stock, Martin Ryan Gardener, Gareth Wakefield
  • Particles for the treatment of cancer in combination with radiotherapy
    Patent number: 10137149
    Abstract: The invention provides a particle comprising a metal oxide which is doped with at least one rare earth element, wherein the metal oxide is selected from titanium dioxide, zinc oxide, cerium oxide and mixtures of two or more thereof. The invention also provides a pharmaceutical composition comprising the particles, and to uses of the particles and composition in the treatment and diagnosis of cancer.
    Type: Grant
    Filed: December 8, 2010
    Date of Patent: November 27, 2018
    Assignee: Oxford University Innovation Limited
    Inventors: Peter James Dobson, Gareth Wakefield, Helen Elizabeth Townley
  • Ultraviolet light screening compositions
    Patent number: 8642019
    Abstract: A UV screening composition comprises particles which are capable of absorbing UV light so that electrons and positively charged holes are formed within the particles. The particles are adapted to minimize migration to the surface of the particles of the electrons and/or the positively charged holes when the particles are exposed to UV light in an aqueous environment.
    Type: Grant
    Filed: February 9, 2005
    Date of Patent: February 4, 2014
    Assignee: Isis Innovation Limited
    Inventors: John Sebastian Knowland, Peter James Dobson, Gareth Wakefield
  • OPTICAL COATING COMPRISING POROUS SILICA NANOPARTICLES
    Publication number: 20130216807
    Abstract: An optical coating comprising a binder and a plurality of porous silica nanoparticles in which the pores are randomly oriented, a solution for forming an optical coating comprising a solvent and a plurality of porous silica nanoparticles in which the pores are randomly oriented, a method for fabricating an optical coating, and the use of porous silica nanoparticles in which the pores are randomly oriented in the manufacture of an optical coating.
    Type: Application
    Filed: August 19, 2011
    Publication date: August 22, 2013
    Applicant: Oxford Energy Technologies Limited
    Inventors: Gareth Wakefield, Martin Gardener, Sasha Ostrowski
  • PARTICLES FOR THE TREATMENT OF CANCER IN COMBINATION WITH RADIOTHERAPY
    Publication number: 20120282185
    Abstract: The invention provides a particle comprising a metal oxide which is doped with at least one rare earth element, wherein the metal oxide is selected from titanium dioxide, zinc oxide, cerium oxide and mixtures of two or more thereof. The invention also provides a pharmaceutical composition comprising the particles, and to uses of the particles and composition in the treatment and diagnosis of cancer.
    Type: Application
    Filed: December 8, 2010
    Publication date: November 8, 2012
    Applicant: ISIS INNOVATION LIMITED
    Inventors: Peter James Dobson, Gareth Wakefield, Helen Elizabeth Townley
  • OPTICAL COATING
    Publication number: 20120111400
    Abstract: An optical coating, comprising porous particles, or formed from porous precursor particles. The average thickness of the coating is in the range of from 75 to 400 nm, and the surface roughness of the coating is in the range of from 2 to 300 nm. This coating provides broadband antireflective properties across the visible and near infrared part of the electromagnetic spectrum.
    Type: Application
    Filed: March 18, 2010
    Publication date: May 10, 2012
    Applicant: Oxford Energy Technologies, Ltd.
    Inventors: Gareth Wakefield, Martin Ryan Gardener, Jon-Paul Griffiths, Richards Charles Wincewicz, Tadeusz Antoni Podgorski
  • BIOFUEL
    Publication number: 20090307967
    Abstract: Cerium or other metal oxide is used with bio-derived fuels to reduce coking and to clean up combustion chamber surfaces.
    Type: Application
    Filed: March 26, 2007
    Publication date: December 17, 2009
    Applicant: Oxonica Energy Ltd
    Inventors: Martin Gardener, Gareth Wakefield, Andrew Elphick
  • Surface-Doped Particles Of Ti02 Or Zno And Their Use
    Publication number: 20080031832
    Abstract: A particle of TiO2 or ZnO which has been doped with one or more other elements such that the concentration of dopant in the surface of the particle is greater than that at the core of the particle, and compositions containing such particles for use as sunscreens or in veterinary, agricultural or horticultural compositions or as coatings for plastics and other materials.
    Type: Application
    Filed: January 26, 2005
    Publication date: February 7, 2008
    Applicant: Oxonica Limited
    Inventors: Gareth Wakefield, George Barry Park, Sarah Lipscomb, Edward Holland
  • Metal Oxide Particles Useful as Free Radical Scavengers in Sunscreen and Cosmetic Compositions
    Publication number: 20070269466
    Abstract: A composition is described which comprises a component which is susceptible to free radical attack, said composition comprising, as a free radical scavenger, at least one particle having a size not exceeding 100 nm of an oxide of a rare earth or transition metal possessing adjacent oxidation states. The composition is preferable a UV sunscreen composition suitable also for cosmetic use.
    Type: Application
    Filed: January 27, 2005
    Publication date: November 22, 2007
    Applicant: OXONICA LIMITED UNIT 7
    Inventors: Gareth Wakefield, George Park
  • Fuel or fuel additive containing doped cerium oxide nanoparticles
    Patent number: 7169196
    Abstract: A fuel or fuel additives is disclosed which includes particles of cerium oxide which have been doped with a divalent or trivalent metal or metalloid which is a rare earth metal, a transition metal or a metal of group IIA, IIIB, VB, or VIB of the Periodic Table.
    Type: Grant
    Filed: November 6, 2002
    Date of Patent: January 30, 2007
    Assignee: Oxonica Materials Limited
    Inventor: Gareth Wakefield
  • Particle comprising a host lattice and a guest, its preparation and use in ultraviolet light screening compositions
    Publication number: 20060104925
    Abstract: A UV screening composition comprising novel particles which are capable of absorbing UV light so that electrons and positively charged holes are formed within the particles is disclosed. These particles comprise a host lattice incorporating a second component to provide luminescence trap sites and/or killer sites, said second component being niobium, vanadium, antimony, tantalum, strontium, calcium, magnesium, barium, molybdenum or silicon.
    Type: Application
    Filed: January 11, 2006
    Publication date: May 18, 2006
    Applicant: Oxonica Limited
    Inventors: John Knowland, Peter Dobson, Gareth Wakefield
  • Ultraviolet light screening compositions
    Publication number: 20060039875
    Abstract: A UV screening composition comprising particles which are capable of absorbing UV light so that electrons and positively charged holes are formed within the particles, characterised in that the particles are adapted to minimise migration to the surface of the particles of the electrons and/or the positively charged holes when said particles are exposed to UV light in an aqueous environment.
    Type: Application
    Filed: August 19, 2005
    Publication date: February 23, 2006
    Inventors: John Knowland, Peter Dobson, Gareth Wakefield
  • Ultraviolet light screening compositions
    Publication number: 20050169857
    Abstract: A UV screening composition comprises particles which are capable of absorbing UV light so that electrons and positively charged holes are formed within the particles. The particles are adapted to minimize migration to the surface of the particles of the electrons and/or the positively charged holes when the particles are exposed to UV light in an aqueous environment.
    Type: Application
    Filed: February 9, 2005
    Publication date: August 4, 2005
    Inventors: John Knowland, Peter Dobson, Gareth Wakefield
  • Cerium oxide nanoparticles
    Publication number: 20050066571
    Abstract: A fuel or fuel additives is disclosed which comprise particles of cerium oxide which have been doped with a divalent or trivalent metal or metalloid which is a rare earth metal, a transition metal or a metal of group IIA, IIIB, VB, or VIB of the Periodic Table.
    Type: Application
    Filed: November 6, 2002
    Publication date: March 31, 2005
    Inventor: Gareth Wakefield
  • Ultraviolet light screening compositions
    Patent number: 6869596
    Abstract: A UV screening composition comprising particles which are capable of absorbing UV light so that electrons and positively charged holes are formed within the particles, characterised in that the particles are adapted to minimise migration to the surface of the particles of the electrons and/or the positively charged holes when said particles are exposed to UV light in an aqueous environment.
    Type: Grant
    Filed: May 27, 1999
    Date of Patent: March 22, 2005
    Assignee: ISIS Innovation Limited
    Inventors: John Sebastian Knowland, Peter James Dobson, Gareth Wakefield
  • Luminescent nanomaterials
    Publication number: 20050013999
    Abstract: A process is disclosed for preparing water soluble particles of a luminescent material which is a rare earth material, a doped compound semi-conductor or a doped inorganic compound which comprises coating particles of said luminescent material, either during production of the particles, or subsequently, with an organic acid or Lewis base such that the surface of the coating possesses one or more reactive groups.
    Type: Application
    Filed: November 1, 2002
    Publication date: January 20, 2005
    Inventors: Gareth Wakefield, Mark Green
  • Near uv excited phospors
    Publication number: 20050013943
    Abstract: Compounds which are excited in the near UV light are disclosed. These have the formula: X(YO4)3 wherein X represents a rare earth metal or more than one rare earth metal such that the total number of rare earth atoms represents a third of the number of YO4 ions and Y represents tungsten, molybdenum, niobium or tantalum and are obtained by reacting ions of X with YO4 ions in solution and recovering the resulting precipitate.
    Type: Application
    Filed: August 22, 2002
    Publication date: January 20, 2005
    Inventor: Gareth Wakefield
  • Water soluble luminescent nanoparticles
    Publication number: 20050008858
    Abstract: A particle of a compound of the formula: Xa(YOb)c wherein X is a rare earth metal or a metal of Group IIA, IIB, IVB or VB of the Periodic Table, or a mixture of two or more thereof, Y is a metal which forms an anion with oxygen, or a mixture of two or more thereof, and a, b and c are such that the compound is stoichiometric, the particle having a size less than 100 nm is disclosed. It can be used in, for example, security marking and biotagging.
    Type: Application
    Filed: November 1, 2002
    Publication date: January 13, 2005
    Inventors: Gareth Wakefield, Mark Green
  • Rare-earth-activated phosphors
    Patent number: 6783855
    Abstract: A process for preparing phosphor particles of a host oxide doped with a rare earth or manganese which comprises: preparing an aqueous solution of salts of the host ion and of the dopant ion and a water soluble compound which decomposes under the reaction conditions to convert said salts into hydroxycarbonate, heating the solution so as to cause said compound to decompose, recovering the resulting precipitate and calcining it at a temperature of at least 500° C. Substantially monocrystalline particles can be obtained by this process.
    Type: Grant
    Filed: September 14, 2001
    Date of Patent: August 31, 2004
    Assignee: ISIS Innovation Limited
    Inventors: Peter James Dobson, Gareth Wakefield
  • Oxide based phosphors
    Publication number: 20030168636
    Abstract: A process is disclosed for preparing phosphor particles of a doped host oxide which comprises: preparing an aqueous solution of salts of the host ion and of the dopant ion which is a rare earth, thorium, titanium, silicon, bismuth, copper, silver, tungsten or chromium and a water soluble compound, which decomposes under the reaction conditions to convert said salts into hydroxycarbonate, heating the solution so as to cause said compound to decompose, recovering the resulting precipitate and calcining it at a temperature of at least 500° C.
    Type: Application
    Filed: April 29, 2003
    Publication date: September 11, 2003
    Inventors: Peter James Dobson, Gareth Wakefield