Patents by Inventor David John Duncalf
David John Duncalf 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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Patent number: 10870817Abstract: A first aspect relates to a particle including: (a) at least one bleaching agent including an organic peroxyacid; (b) at least one component selected from: (i) saccharides and polysaccharides, and derivatives thereof; (ii) inorganic fillers selected from the group consisting of talcs, micas, zeolites, silicates, metal oxides and clays; and (iii) linear, branched and cross-linked polymers and copolymers; (c) at least one pH reducing agent; and (d) at least one chelating agent. Further aspects relate to a process for preparing the particle, a composition or a dough including the particle, and use of the particle in a cleaning composition, a dental care composition, a hair dyeing composition or decolouriser, an antimicrobial composition or a bleach composition.Type: GrantFiled: February 10, 2015Date of Patent: December 22, 2020Assignee: SOCIETA CHIMICA BUSSI S.P.A.Inventors: Paul Hugh Findlay, David Alan Pears, David John Duncalf, Melanie Jane Hughes, Lisa Elizabeth Scullion
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Publication number: 20170218315Abstract: The present invention relates to an enzyme composition comprising enzyme containing polymer particles, which is useful for liquid laundry detergent compositions. In these enzyme containing particles, the particles comprise at least one enzyme, and at least one polymer, which is a hydrophobic modified polyvinyl alcohol.Type: ApplicationFiled: July 7, 2015Publication date: August 3, 2017Applicant: Novozymes A/SInventors: Tue Rasmussen, Katarina Jacobson, Kim Bruno Andersen, Martin Noerby, Morten Foverskov, Ole Simonsen, Robert Neil Hay, David John Duncalf, David Brian Young, David Alan Pears
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Publication number: 20170166845Abstract: A composite including at least one benefit agent, and a blend including: at least one water soluble polymer; and at least one salt, or at least one surfactant, or a mixture thereof; optionally at least one wax or wax-like substance; and optionally at least one amphiphilic polymer. Further aspects of the invention relate to a process for preparing the composites, consumer products including the composites and uses thereof.Type: ApplicationFiled: July 13, 2015Publication date: June 15, 2017Applicant: REVOLYMER (U.K.) LIMITEDInventors: David John DUNCALF, Paul Hugh FINDLAY, David Alan PEARS, Magdalena Agnieszka WARUNEK, Robert Neil HAY
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Publication number: 20160348037Abstract: A first aspect relates to a particle including: (a) at least one bleaching agent including an organic peroxyacid; (b) at least one component selected from: (i) saccharides and polysaccharides, and derivatives thereof; (ii) inorganic fillers selected from the group consisting of talcs, micas, zeolites, silicates, metal oxides and clays; and (iii) linear, branched and cross-linked polymers and copolymers; (c) at least one pH reducing agent; and (d) at least one chelating agent. Further aspects relate to a process for preparing the particle, a composition or a dough including the particle, and use of the particle in a cleaning composition, a dental care composition, a hair dyeing composition or decolouriser, an antimicrobial composition or a bleach composition.Type: ApplicationFiled: February 10, 2015Publication date: December 1, 2016Applicant: REVOLYMER (U.K.) LIMITEDInventors: Paul Hugh FINDLAY, David Alan PEARS, David John DUNCALF, Melanie Jane HUGHES, Lisa Elizabeth SCULLION
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Publication number: 20160024441Abstract: A composite including: one or more core units including at least one benefit agent; and a coating on the one or more core units, wherein the coating includes a blend including: at least one wax or wax-like substance; and at least one amphiphilic polymer. Further aspects relate to a process for preparing such composites, and their use in consumer products.Type: ApplicationFiled: March 10, 2014Publication date: January 28, 2016Inventors: Terence COSGROVE, David John DUNCALF, Paul Hugh FINDLAY, Melanie Jane HUGHES, David Alan PEARS, Magdalena Agnieszka WARUNEK
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Patent number: 9060937Abstract: A process for the production of a composition comprising a water-insoluble sartan which comprises the steps of: a) providing a mixture comprising: i) a water-insoluble sartan, ii) a water soluble carrier, iii) a solvent for each of the sartan and the carrier, and b) spray-drying the mixture to remove the or each solvent and obtain a substantially solvent-free nano-dispersion of the sartan in the carrier.Type: GrantFiled: June 29, 2007Date of Patent: June 23, 2015Inventors: David John Duncalf, Andrew James Elphick, Alison Jayne Foster, James Long, Steven Paul Rannard, Dong Wang
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Patent number: 8945626Abstract: A process for the production of a composition comprising a water-insoluble paracetamol or NSAID which comprises the steps of: a) providing a mixture comprising: i) a water-insoluble paracetamol or NSAID, ii) a water soluble carrier, and iii) a solvent for each of the paracetamol or NSAID and the carrier, and b) spray-drying the mixture to remove the or each solvent and obtain a substantially solvent-free nano-dispersion of the paracetamol or NSAID in the carrier.Type: GrantFiled: July 13, 2007Date of Patent: February 3, 2015Inventors: Andrew James Elphick, John Staniforth, Dong Wang, David John Duncalf, Steven Paul Rannard, James Long, Alison Jayne Foster
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Patent number: 8821932Abstract: A process for the production of a composition comprising a water-insoluble statin which comprises the steps of: a) providing a mixture comprising: i) a water-insoluble statin ii) a water soluble carrier, iii) a solvent for each of the statin and the carrier, and b) spray-drying the mixture to remove the or each solvent and obtain a substantially solvent-free nano-dispersion of the statin in the carrier.Type: GrantFiled: June 29, 2007Date of Patent: September 2, 2014Inventors: David John Duncalf, Alison Jayne Foster, James Long, Steven Paul Rannard, Dong Wang
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Patent number: 8242182Abstract: The invention provides a method for preparing water dispersible or water soluble porous bodies and the bodies themselves The bodies have an intrusion volume as measured by mercury porosimetry of at least about 3 ml/g and comprise a three dimensional open-cell lattice containing less than 10% by weight of a water soluble polymeric material and 5 to 90% by weight of a surfactant, with the proviso that said porous bodies are not spherical beads having an average bead diameter of 0.2 to 5 mm.Type: GrantFiled: January 28, 2005Date of Patent: August 14, 2012Assignee: IOTA NanoSolutions LimitedInventors: Andrew Ian Cooper, David John Duncalf, Alison Jayne Foster, Steven Paul Rannard, Haifei Zhang
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Publication number: 20120134940Abstract: The invention provides process for making water-soluble nano-dispersions of water-insoluble materials in a water-soluble carrier material comprising the steps of: (i) providing a single phase mixture of: (a) a non-aqueous solvent or a mixture of miscible non-aqueous solvents, (b) at least one carrier material soluble in non-aqueous solvent (a), said carrier material being also soluble in water and solid at ambient temperature, (c) at least one water-insoluble payload material which is soluble in non-solvent (a), and, (ii) drying the mixture to remove solvent (a) and thereby obtain the carrier material (b) in solid form with payload (c) dispersed therein as nanoparticles, wherein the product of the drying step is water dispersible to give an aqueous solution of (b) and an aqueous nano-dispersion of (c).Type: ApplicationFiled: February 3, 2012Publication date: May 31, 2012Applicant: IOTA NanoSolutions LimitedInventors: Doris Angus, David John Duncalf, Andrew James Elphick, Alison Jayne Foster, James Long, Steven Paul Rannard, Dong Wang
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Publication number: 20120135058Abstract: The invention provides process for making contra-soluble nano-dispersions of at most sparingly-soluble materials in a soluble carrier material comprising the steps of: (i) providing a single phase mixture of: (a) a solvent or a mixture of miscible solvents wherein at least one of the solvents is an aqueous solvent and at least another solvent is a non-aqueous solvent, (b) at least one carrier material soluble in solvent (a), said carrier material being also contra-soluble to payload material (c) and solid at ambient temperature, (c) at least one a payload material which is soluble in solvent (a), and, (ii) freeze-drying the mixture to remove solvent (a) and thereby obtain the carrier material (b) in solid form with payload (c) dispersed therein as nanoparticles.Type: ApplicationFiled: February 3, 2012Publication date: May 31, 2012Applicant: IOTA NanoSolutions LimitedInventors: Doris Angus, David John Duncalf, Andrew James Elphick, Alison Jayne Foster, James Long, Steven Paul Rannard, Dong Wang
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Publication number: 20110217381Abstract: The present invention provides a substantially solvent-free nano-dispersion of an active in a carrier, wherein the carrier comprises an enteric carrier soluble at intestinal pH, but insoluble at stomach pH, and wherein the enteric carrier comprises at least 50% by weight of the nano-dispersion; and processes for the preparation of a substantially solvent-free nano-dispersion of an active in a carrier.Type: ApplicationFiled: August 3, 2009Publication date: September 8, 2011Inventors: Doris Angus, David John Duncalf, Alison Jane Foster, Steven Paul Rannard, Dong Wang
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Patent number: 7691873Abstract: A process for the production of a composition comprising a water-insoluble opioid which comprises the steps of: a) providing a mixture comprising: i) a water-insoluble opioid, ii) a water soluble carrier, and iii) a solvent for each of the opioid and the carrier, and b) spray-drying the mixture to remove the or each solvent and obtain a substantially solvent-free nano-dispersion of the opioid in the carrier.Type: GrantFiled: July 13, 2007Date of Patent: April 6, 2010Assignee: Conopco, Inc.Inventors: David John Duncalf, Steven Paul Rannard, James Long, Dong Wang, Andrew James Elphick, John Staniforth, Daniele Chauvin, Alison Jayne Foster
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Publication number: 20100015233Abstract: The present invention relates to nanodisperse antiparasitics and provides a composition comprising at least one water insoluble anti-parasitic drug and a water-soluble carrier material, wherein the water-insoluble anti-parasitic drug (preferably an Artemisinin-type drug or a quinine type drug) is dispersed through the carrier material in nano-disperse form having a peak diameter of the nano-disperse form below 1000 nm.Type: ApplicationFiled: June 29, 2007Publication date: January 21, 2010Inventors: David John Duncalf, Asha Hassan Essa, Alison Jayne Foster, James Long, Steven Paul Rannard, Dong Wang
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Publication number: 20100015229Abstract: A process for the production of a composition comprising a water-insoluble statin which comprises the steps of: a) providing a mixture comprising: i) a water-insoluble statin ii) a water soluble carrier, iii) a solvent for each of the statin and the carrier, and b) spray-drying the mixture to remove the or each solvent and obtain a substantially solvent-free nano-dispersion of the statin in the carrier.Type: ApplicationFiled: June 29, 2007Publication date: January 21, 2010Inventors: David John Duncalf, Alison Jayne Foster, James Long, Steven Paul Rannard, Dong Wang
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Publication number: 20100008995Abstract: A process for the production of a composition comprising a water-insoluble triptan which comprises the steps of: a) providing a mixture comprising: i) a water-insoluble triptan, ii) a water soluble carrier, and iii) a solvent for each of the triptan and the carrier, and b) spray-drying the mixture to remove the or each solvent and obtain a substantially solvent-free nano-dispersion of the triptan in the carrier.Type: ApplicationFiled: July 13, 2007Publication date: January 14, 2010Inventors: David John Duncalf, Paul Rannard, James Long, Dong Wang, Andrew James Elphick, John Staniforth, Alison Jayne Foster
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Publication number: 20090325995Abstract: A process for the production of a composition comprising a water-insoluble opioid which comprises the steps of: a) providing a mixture comprising: i) a water-insoluble opioid, ii) a water soluble carrier, and iii) a solvent for each of the opioid and the carrier, and b) spray-drying the mixture to remove the or each solvent and obtain a substantially solvent-free nano-dispersion of the opioid in the carrierType: ApplicationFiled: July 13, 2007Publication date: December 31, 2009Inventors: David John Duncalf, Steven Paul Rannard, James Long, Dong Wang, Andrew James Elphick, John Staniforth, Daniele Chauvin, Alison Jayne Foster
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Publication number: 20090304806Abstract: A process for the production of a composition comprising a water-insoluble sartan which comprises the steps of: a) providing a mixture comprising: i) a water-insoluble sartan, ii) a water soluble carrier, iii) a solvent for each of the sartan and the carrier, and b) spray-drying the mixture to remove the or each solvent and obtain a substantially solvent-free nano-dispersion of the sartan in the carrier.Type: ApplicationFiled: June 29, 2007Publication date: December 10, 2009Inventors: David John Duncalf, Andrew James Elphick, Alison Jayne Foster, James Long, Steven Paul Rannard, Dong Wang
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Publication number: 20090239749Abstract: The invention provides a solvent-free biocidal composition of improved efficacy comprising at least one water insoluble biocide (preferably a herbicide) and a water-soluble carrier material, wherein the water-insoluble biocide is dispersed through the carrier material in nano-disperse form having a peak diameter of the nano-disperse form below 1000 nm. The invention also provides a process which comprises spray drying a solution of the biocide and a solution of a water-soluble carrier to obtain a solvent free dispersion of the biocide in the carrier, which, when dissolved in water, produces a nano-disperse biocide. The invention also provides an aqueous dispersion of a water insoluble biocide and a water-soluble carrier obtained by the dispersion of the composition of the solvent free composition in water.Type: ApplicationFiled: June 29, 2007Publication date: September 24, 2009Inventors: David John Duncalf, Alison Jayne Foster, James Long, Steven Paul Rannard, Dong Wang
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Publication number: 20090175953Abstract: The invention provides process for making contra-soluble nano-dispersions of at most sparingly-soluble materials in a soluble carrier material comprising the steps of: (i) providing a single phase mixture of: a) a solvent or a mixture of miscible solvents, b) at least one carrier material soluble in solvent (a), said carrier material being also contra-soluble to payload material (c) and solid at ambient temperature, c) at least one a payload material which is soluble in solvent (a), and, (ii) drying the mixture to remove solvent (a) and thereby obtain the carrier material (b) in solid form with payload (c) dispersed therein as nanoparticles.Type: ApplicationFiled: June 29, 2007Publication date: July 9, 2009Inventors: Doris Angus, David John Duncalf, Andrew James Elphick, Alison Jayne Foster, James Long, Steven Paul Rannard, Dong Wang