Patents by Inventor Steven Rannard
Steven Rannard 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).
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Publication number: 20220002460Abstract: Responsive or degradable branched polymers may be prepared by the free radical polymerisation of a multivinyl monomer in the presence of a chain transfer agent, using a source of radicals, wherein the extent of propagation is controlled relative to the extent of chain transfer to prevent gelation of the polymer. The multivinyl monomer may comprise a cleavable group, for example an ester, or a multiplicity of such groups, between two vinyl groups. Said monomer may be a macromonomer containing multiple cleavage sites.Type: ApplicationFiled: October 31, 2019Publication date: January 6, 2022Applicant: The University of LiverpoolInventors: Steven Rannard, Pierre Chambon, Savannah Cassin
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Publication number: 20200297652Abstract: Particles comprising a branched polymer and either a block copolymer or a linear dendritic hybrid represent a category of useful materials. They may be used in for example drug delivery applications. They may be prepared by a method comprising the steps of: dissolving the branched polymer and block copolymer or linear dendritic hybrid, and optionally other component(s), in a solvent to form a solution; adding said solution to a different liquid; and removing said solvent to form a dispersion of co-precipitated particles.Type: ApplicationFiled: June 8, 2020Publication date: September 24, 2020Inventors: Steven Rannard, Jane Ford, Hannah Rogers, Pierre Chambon, Marco Giardiello, Andrew Owen, Neil Kitteringham
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Publication number: 20190023852Abstract: Branched polyesters carrying dendrons are a useful class of nanomaterials which exhibit good handling properties and stability, can degrade to a high extent, and are effective encapsulation materials. They can be used to make nanoprecipitated particles which may for example be used in therapy. Furthermore, these materials can be synthesised by economical and tailorable processes. The materials can be prepared by the ring-opening polymerisation (ROP) of mono-functional lactone monomers and difunctional lactone monomers, using dendron initiators.Type: ApplicationFiled: December 29, 2016Publication date: January 24, 2019Inventors: Steven Rannard, Andrew Owen, Pierre Chambon, Hannah Rogers, Sarah Blackmore
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Publication number: 20160159954Abstract: A method of preparing a pH-responsive non-gelled branched vinyl polymer scaffold carrying dendrons, comprising the living or controlled polymerization of a mono functional vinyl monomer and a difunctional vinyl monomer, using a dendron initiator.Type: ApplicationFiled: June 13, 2014Publication date: June 9, 2016Applicants: The Univeristy of Liverpool, The Univeristy of LiverpoolInventors: Steven Rannard, Andrew Owen, Hannah Rogers, Fiona Hatton, Faye Southworth
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Publication number: 20160159940Abstract: A method of preparing a non-gelled branched vinyl polymer scaffold carrying dendrons, comprising the living or controlled polymerization of a monofunctional vinyl monomer and a difunctional vinyl monomer, using a dendron initiator and at least one further initiator.Type: ApplicationFiled: June 13, 2014Publication date: June 9, 2016Applicants: The Univeristy of Liverpool, The Univeristy of LiverpoolInventors: Steven Rannard, Andrew Owen, Hannah Rogers, Marco Giardiello, Fiona Hatton, Pierre Chambon, Samuel Auty, Andrew Dwyer, Lee Tatham
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Patent number: 8722830Abstract: The present invention relates to a branched vinyl polymer carrying dendrons made from monofunctional vinyl monomers and branched by virtue of difunctional vinyl monomers so that there is on average one branch or fewer per polymer chain to avoid gelation. The polymer may be made by chain-growth polymerization of predominantly monofunctional vinyl monomers in the presence of difunctional vinyl monomers and dendron units.Type: GrantFiled: March 13, 2013Date of Patent: May 13, 2014Assignee: The University of LiverpoolInventors: Jonathan Weaver, Steven Rannard, Gwenaelle Bonzi, Andrew Cooper
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Patent number: 8614284Abstract: The present invention relates to a branched vinyl polymer carrying dendrons made from monofunctional vinyl monomers and branched by virtue of difunctional vinyl monomers so that there is on average one branch or fewer per polymer chain to avoid gelation. The polymer may be made by chain-growth polymerization of predominantly monofunctional vinyl monomers in the presence of difunctional vinyl monomers and dendron units.Type: GrantFiled: April 6, 2009Date of Patent: December 24, 2013Assignee: The University of LiverpoolInventors: Gwenaelle Bonzi, Jonathan Weaver, Andrew Cooper, Steven Rannard
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Publication number: 20130231450Abstract: The present invention relates to a branched vinyl polymer carrying dendrons made from monofunctional vinyl monomers and branched by virtue of difunctional vinyl monomers so that there is on average one branch or fewer per polymer chain to avoid gelation. The polymer may be made by chain-growth polymerization of predominantly monofunctional vinyl monomers in the presence of difunctional vinyl monomers and dendron units.Type: ApplicationFiled: March 13, 2013Publication date: September 5, 2013Applicant: THE UNIVERSITY OF LIVERPOOLInventors: Gwenaelle Bonzi, Jonathan Weaver, Andrew Cooper, Steven Rannard
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Publication number: 20110201773Abstract: The present invention relates to a branched vinyl polymer carrying dendrons made from monofunctional vinyl monomers and branched by virtue of difunctional vinyl monomers so that there is on average one branch or fewer per polymer chain to avoid gelation. The polymer may be made by chain-growth polymerization of predominantly monofunctional vinyl monomers in the presence of difunctional vinyl monomers and dendron units.Type: ApplicationFiled: April 6, 2009Publication date: August 18, 2011Applicant: Ulive Enterprises Ltd.Inventors: Gwenaelle Bonzi, Jonathan Weaver, Andrew Cooper, Steven Rannard
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Publication number: 20070298239Abstract: Water dispersible or water soluble porous bodies comprising a three dimensional open-cell lattice containing 10 to 95% by weight of a polymeric material which is soluble in water, and, less than 5% by weight of a surfactant, said porous bodies having an intrusion volume as measured by mercury porosimetry (as hereinafter described) of at least about 3 ml/g, and, with the proviso that said porous bodies are not spherical beads having an average bead diameter of 0.2 to 5 mm.Type: ApplicationFiled: January 28, 2005Publication date: December 27, 2007Inventors: Andrew Cooper, David Duncalf, Alison Foster, Steven Rannard, Haifei Zhang
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Publication number: 20070225388Abstract: Water dispersible or water soluble porous bodies comprising a three dimensional open-cell lattice containing (a) 10 to 95% by weight of a water soluble polymeric material and (b) 5 to 90% by weight of a surfactant, said porous bodies having an intrusion volume as measured by mercury porosimetry of at least about 3 ml/g with the proviso that said porous bodies are not spherical beads having an average bead diameter of 0.Type: ApplicationFiled: December 23, 2004Publication date: September 27, 2007Inventors: Andrew Cooper, Alison Foster, Steven Rannard, Haifei Zhang
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Publication number: 20050226826Abstract: A delivery system comprising an active agent encapsulated by a polymeric film comprising a polymeric backbone derived from a polymer which is water soluble, and one or more derivatising groups attached to the backbone, the derivatising group(s) being derived from a parent material having a ClogP of from 0.5 to 6, the delivery system also comprising a surfactant on the outside of the polymeric film.Type: ApplicationFiled: April 5, 2005Publication date: October 13, 2005Inventors: Michael Eason, Craig Jones, Steven Rannard, Brodyck Royles, Michael White
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Publication number: 20050063919Abstract: Oral care composition comprising a polymer obtainable by copolymerising a mixture of comonomers, from 5 to 95 mol % of the mixture of comonomers is constituted by a comonomer having the formula (I): H2C?C(R)-L-(CH2)n-Y??(I) in which R is hydrogen or a methyl group, L is a divalent organic linking group incorporating a benzyl or a carboxyl functionality, n is an integer of from 1 to 4 and Y is an amine, quaternized amine or quaternary ammonium group; and in which the balance of the mixture of comonomers is constituted by neutral and/or anionic comonomers; said composition being in the form of any one of a toothpaste, gel, foam, chewing gum, deformable strip or mouthwash and being suitable for use in the oral cavity.Type: ApplicationFiled: September 19, 2003Publication date: March 24, 2005Inventors: Han Chang, Dominique Charmot, David Duncalf, Oleg Kolosov, Victor Nava-Salgado, Son Nguyen, Miroslav Petro, Steven Rannard
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Publication number: 20050063921Abstract: Oral care composition comprising a polymer obtainable by copolymerising a mixture of comonomers, said mixture comprising: (a) a cationic monomer selected from (ar-vinylbenzyl) trimethylammonium chloride, (dimethylaminopropyl) methacrylamide, [2(methacryloyloxy)ethyl]trimethylammonium chloride, 2-aminoethylmethacrylate hydrochloride and mixtures thereof; and (b) at least one anionic or neutral monomer selected from styrene, mono-2-(methacryloyl)ethyl succinate, vinyl acetate, N, N-dimethylacrylamide, 2-ethylhexylacrylate, vinylphosphonic acid, acrylic acid, 2-acrylamido-2-methyl-1-propanesulfonic acid, N-[tris(hydroxymethyl)methyl] acrylamide, N-vinylpyrrolidone, butyl acrylate, 2-hydroxyethylacrylate, polyethyleneglycol methylethermethacrylate and mixtures thereof, said oral care composition in the form of any one of a toothpaste, gel, foam, chewing gum, deformable strip or mouthwash and which is suitable for use in the oral cavity.Type: ApplicationFiled: September 19, 2003Publication date: March 24, 2005Inventors: Dominique Charmot, Christopher Gibbs, Oleg Kolosov, Mingjun Liu, Son Nguyen, Miroslav Petro, Steven Rannard
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Publication number: 20050063918Abstract: Oral care composition comprising a polymer obtainable by copolymerising a mixture of comonomers, in which at least 40 mol % of the mixture of comonomers is constituted by a comonomer having the formula (I): H2C?C(R)—(X)n—Y in which R is hydrogen or a methyl group, X is a divalent organic linking group, n is an integer of 0 or 1, and Y is a carboxylate or phosphonate anion, or the corresponding salt or acid thereof; and in which the balance of the mixture of comonomers is constituted by neutral and/or cationic comonomers; said composition being in the form of any one of a toothpaste, gel, foam, chewing gum, deformable strip or mouthwash and being suitable for use in the oral cavity.Type: ApplicationFiled: September 19, 2003Publication date: March 24, 2005Inventors: Dominique Charmot, Christopher Gibbs, Oleg Kolosov, Mingjun Liu, Son Nguyen, Miroslav Petro, Steven Rannard
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Publication number: 20050063920Abstract: Oral care composition comprising a cationic polymer obtainable by copolymerising a mixture of comonomers, said mixture comprising (ar-vinylbenzyl) trimethylammonium chloride, 2-acrylamido-2-methyl-1-propanesulfonic acid and polyethyleneglycol methylethermethacrylate, said composition being in the form of any one of a toothpaste, gel, foam, chewing gum, deformable strip or mouthwash and being suitable for use in the oral cavity.Type: ApplicationFiled: September 19, 2003Publication date: March 24, 2005Inventors: Han Chang, Dominique Charmot, David Duncalf, Oleg Kolosov, Victor Nava-Salgado, Son Nguyen, Miroslav Petro, Steven Rannard
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Publication number: 20020072473Abstract: The invention concerns a method of removing soil from a surface, comprises the steps of:Type: ApplicationFiled: August 28, 2001Publication date: June 13, 2002Applicant: Unilever Home & Personal Care USA, Division of Conopco, Inc.Inventors: Alexander Thomas Ashcroft, Melvin Carvell, Clare Thomas Evans, Peter Graham, Matthew James Leach, Colina Mackay, Antonius Maria Neplenbroek, Steven Rannard, Bouke Suk, David William Thornthwaite
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Publication number: 20010005502Abstract: A stable oral composition comprising a natural or synthetic macromolecule with a monofluorophosphate moiety covalently bonded thereto.Type: ApplicationFiled: December 15, 2000Publication date: June 28, 2001Inventors: Alison Foster, Christopher David Gibbs, Anne Hilton, Ezat Khoshdel, Steven Rannard