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).

  • Patent number: 10870817
    Abstract: 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: Grant
    Filed: February 10, 2015
    Date of Patent: December 22, 2020
    Assignee: SOCIETA CHIMICA BUSSI S.P.A.
    Inventors: Paul Hugh Findlay, David Alan Pears, David John Duncalf, Melanie Jane Hughes, Lisa Elizabeth Scullion
  • Publication number: 20170218315
    Abstract: 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: Application
    Filed: July 7, 2015
    Publication date: August 3, 2017
    Applicant: Novozymes A/S
    Inventors: 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
  • Publication number: 20170166845
    Abstract: 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: Application
    Filed: July 13, 2015
    Publication date: June 15, 2017
    Applicant: REVOLYMER (U.K.) LIMITED
    Inventors: David John DUNCALF, Paul Hugh FINDLAY, David Alan PEARS, Magdalena Agnieszka WARUNEK, Robert Neil HAY
  • Publication number: 20160348037
    Abstract: 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: Application
    Filed: February 10, 2015
    Publication date: December 1, 2016
    Applicant: REVOLYMER (U.K.) LIMITED
    Inventors: Paul Hugh FINDLAY, David Alan PEARS, David John DUNCALF, Melanie Jane HUGHES, Lisa Elizabeth SCULLION
  • Publication number: 20160024441
    Abstract: 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: Application
    Filed: March 10, 2014
    Publication date: January 28, 2016
    Inventors: Terence COSGROVE, David John DUNCALF, Paul Hugh FINDLAY, Melanie Jane HUGHES, David Alan PEARS, Magdalena Agnieszka WARUNEK
  • Patent number: 9060937
    Abstract: 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: Grant
    Filed: June 29, 2007
    Date of Patent: June 23, 2015
    Inventors: David John Duncalf, Andrew James Elphick, Alison Jayne Foster, James Long, Steven Paul Rannard, Dong Wang
  • Patent number: 8945626
    Abstract: 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: Grant
    Filed: July 13, 2007
    Date of Patent: February 3, 2015
    Inventors: Andrew James Elphick, John Staniforth, Dong Wang, David John Duncalf, Steven Paul Rannard, James Long, Alison Jayne Foster
  • Patent number: 8821932
    Abstract: 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: Grant
    Filed: June 29, 2007
    Date of Patent: September 2, 2014
    Inventors: David John Duncalf, Alison Jayne Foster, James Long, Steven Paul Rannard, Dong Wang
  • Patent number: 8242182
    Abstract: 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: Grant
    Filed: January 28, 2005
    Date of Patent: August 14, 2012
    Assignee: IOTA NanoSolutions Limited
    Inventors: Andrew Ian Cooper, David John Duncalf, Alison Jayne Foster, Steven Paul Rannard, Haifei Zhang
  • Publication number: 20120134940
    Abstract: 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: Application
    Filed: February 3, 2012
    Publication date: May 31, 2012
    Applicant: IOTA NanoSolutions Limited
    Inventors: Doris Angus, David John Duncalf, Andrew James Elphick, Alison Jayne Foster, James Long, Steven Paul Rannard, Dong Wang
  • Publication number: 20120135058
    Abstract: 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: Application
    Filed: February 3, 2012
    Publication date: May 31, 2012
    Applicant: IOTA NanoSolutions Limited
    Inventors: Doris Angus, David John Duncalf, Andrew James Elphick, Alison Jayne Foster, James Long, Steven Paul Rannard, Dong Wang
  • Publication number: 20110217381
    Abstract: 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: Application
    Filed: August 3, 2009
    Publication date: September 8, 2011
    Inventors: Doris Angus, David John Duncalf, Alison Jane Foster, Steven Paul Rannard, Dong Wang
  • Patent number: 7691873
    Abstract: 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: Grant
    Filed: July 13, 2007
    Date of Patent: April 6, 2010
    Assignee: Conopco, Inc.
    Inventors: David John Duncalf, Steven Paul Rannard, James Long, Dong Wang, Andrew James Elphick, John Staniforth, Daniele Chauvin, Alison Jayne Foster
  • Publication number: 20100015233
    Abstract: 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: Application
    Filed: June 29, 2007
    Publication date: January 21, 2010
    Inventors: David John Duncalf, Asha Hassan Essa, Alison Jayne Foster, James Long, Steven Paul Rannard, Dong Wang
  • Publication number: 20100015229
    Abstract: 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: Application
    Filed: June 29, 2007
    Publication date: January 21, 2010
    Inventors: David John Duncalf, Alison Jayne Foster, James Long, Steven Paul Rannard, Dong Wang
  • Publication number: 20100008995
    Abstract: 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: Application
    Filed: July 13, 2007
    Publication date: January 14, 2010
    Inventors: David John Duncalf, Paul Rannard, James Long, Dong Wang, Andrew James Elphick, John Staniforth, Alison Jayne Foster
  • Publication number: 20090325995
    Abstract: 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: Application
    Filed: July 13, 2007
    Publication date: December 31, 2009
    Inventors: David John Duncalf, Steven Paul Rannard, James Long, Dong Wang, Andrew James Elphick, John Staniforth, Daniele Chauvin, Alison Jayne Foster
  • Publication number: 20090304806
    Abstract: 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: Application
    Filed: June 29, 2007
    Publication date: December 10, 2009
    Inventors: David John Duncalf, Andrew James Elphick, Alison Jayne Foster, James Long, Steven Paul Rannard, Dong Wang
  • Publication number: 20090239749
    Abstract: 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: Application
    Filed: June 29, 2007
    Publication date: September 24, 2009
    Inventors: David John Duncalf, Alison Jayne Foster, James Long, Steven Paul Rannard, Dong Wang
  • Publication number: 20090175953
    Abstract: 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: Application
    Filed: June 29, 2007
    Publication date: July 9, 2009
    Inventors: Doris Angus, David John Duncalf, Andrew James Elphick, Alison Jayne Foster, James Long, Steven Paul Rannard, Dong Wang