Patents by Inventor David Mark Haddleton
David Mark Haddleton 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: 11491087Abstract: The present invention relates to a method of capturing and stabilising volatile thiol malodour generated on the human skin, comprising steps of: i) contacting the human skin with a substrate, ii) absorbing said thiol into the substrate, and iii) reacting said thiol with a thiol-capture agent. The invention also relates to a method of quantifying said thiol, a method of assessing the deodorizing performance of a cosmetic composition on the human skin.Type: GrantFiled: April 12, 2019Date of Patent: November 8, 2022Assignee: CONOPCO, INC.Inventors: Susan Bates, David Mark Haddleton, Rachel Alice Hand, Gavin William Kirby, Ezat Khoshdel
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Publication number: 20210052471Abstract: The present invention relates to a method of capturing and stabilising volatile thiol malodour generated on the human skin, comprising steps of: i) contacting the human skin with a substrate, ii) absorbing said thiol into the substrate, and iii) reacting said thiol with a thiol-capture agent. The invention also relates to a method of quantifying said thiol, a method of assessing the deodorizing performance of a cosmetic composition on the human skin.Type: ApplicationFiled: April 12, 2019Publication date: February 25, 2021Applicant: Conopco, Inc., d/b/a UNILEVERInventors: Susan BATES, David Mark HADDLETON, Rachel Alice HAND, Gavin William KIRBY, Ezat KHOSHDEL
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Publication number: 20210007655Abstract: A method for mapping sweat production from the human skin, said method comprising the application of a polydiacetylene (PDA) prepared from a derivative of a conjugated diynoic acid having at least 18 carbon atoms, wherein the PDA changes colour when exposed to sweat, but does not change colour when exposed to pure water.Type: ApplicationFiled: February 27, 2019Publication date: January 14, 2021Inventors: Tammie Rose Barlow, Susan Bates, David Mark Haddleton, Ezat Khoshdel, Gavin William Kirby
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Publication number: 20190298249Abstract: A method of sampling volatile malodorous materials, said method comprising the topical application of a patch comprising an absorbent hydrogel layer and a backing sheet adhering to it, the volatile malodourous materials being absorbed into the hydrogel layer and subsequently extracted from it.Type: ApplicationFiled: October 11, 2017Publication date: October 3, 2019Inventors: Susan Bates, David Mark Haddleton, Rachel Alice Hand, Ezat Khoshdel
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Publication number: 20190246721Abstract: A patch and method for capturing perspiration, the patch comprising an absorbent hydrogel layer and a backing sheet adhering to it, the patch preferably comprising a permeable inner membrane and/or a benefit agent embedded in the hydrogel layer.Type: ApplicationFiled: October 11, 2017Publication date: August 15, 2019Inventors: Susan Bates, David Mark Haddleton, Rachel Alice Hand, Ezat Khoshdel
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Publication number: 20100004391Abstract: A method of protecting hair by covalently bonding to the hair a polymeric compound comprising polyethylene glycol.Type: ApplicationFiled: November 14, 2007Publication date: January 7, 2010Inventors: David Mark Haddleton, Ezat Khoshdel, Julien Nicolas
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Patent number: 6949613Abstract: The application discloses supported initiators for transition metal mediated living free radical and/or atom transfer polymerisation comprising an initiator moiety attached to a support via a selectively cleavable link, and their use to produce polymers.Type: GrantFiled: June 8, 2001Date of Patent: September 27, 2005Assignee: University of WarwickInventor: David Mark Haddleton
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Publication number: 20040044156Abstract: The application discloses supported initiators for transition metal medicated living free radical and/or atom transfer polymerisation comprising an initiator moiety attached to a support via a selectively cleavable link, and their use to produce polymers.Type: ApplicationFiled: August 28, 2003Publication date: March 4, 2004Inventor: David Mark Haddleton
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Patent number: 6310149Abstract: A catalyst is provided for addition polymerization of olefinically unsaturated monomers comprising a first compound MY, wherein M is a transition metal in a low valency state or a transition metal in a low valency state coordinated to at least one coordinating non-charged ligand, Y is a monovalent, divalent or polyvalent counterion; an initiator compound comprising a homolytically breakable bond with a halogen atom; and an organodiimine, where at least one of the nitrogens of the diimine is not part of an aromatic ring.Type: GrantFiled: February 1, 1999Date of Patent: October 30, 2001Assignee: University of WarwickInventor: David Mark Haddleton
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Patent number: 6017992Abstract: Process for the production of an aqueous polymer emulsion which process comprises:a) preparing a low molecular weight polymer containing acid-functional groups using a free-radical polymerisation process which employs a free-radical initiator and, for the purpose of controlling molecular weight, a transition metal chelate complex, wherein said low molecular weight polymer has a number average molecular weight within the range of from 500 to 50,000;b) conducting an aqueous emulsion polymerisation process to form an aqueous emulsion of a hydrophobic polymer from at least one olefinically unsaturated monomer, wherein the low molecular weight polymer of step a) is introduced to the aqueous medium of said emulsion polymerisation process before the start of and/or during said emulsion polymerisation process and becomes dissolved or dispersed in said aqueous medium.Type: GrantFiled: June 30, 1998Date of Patent: January 25, 2000Assignees: Zeneca Limited, Zeneca Resins BVInventors: David Mark Haddleton, John Christopher Padget, Gerardus Cornelis Overbeek
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Patent number: 5962609Abstract: Process for the free-radical polymerisation of olefinically unsaturated monomer(s) using a free-radical initiator, the polymerisation being performed in the presence of a compound for effecting molecular weight control, wherein the molecular weight control compound is a Co Il chelate of the following formula I ##STR1## wherein each group X, independently in each ring and in different rings, is a substituent selected from alkyl of 1 to 14 carbon atoms and cycloalkyl of 6 to 14 carbon atoms; n, independently in each ring, is 0 to 5 provided that in at least one ring, n is 1 to 5; Z, independently on each boron atom, is selected from F, Cl, Br, OH, alkoxy of 1 to 12 carbon atoms, aryloxy of 6 to 12 carbon atoms, alkyl of 1 to 12 carbon atoms, and aryl of 6 to 12 carbon atoms; or two Z groups taken together provide on one or both boron atoms a group --O--(Q)--O-- where Q is a divalent aryl or alicyclic linking group or an alkylene linking group, or two Z groups taken together on one or both boron atoms provide aType: GrantFiled: July 15, 1997Date of Patent: October 5, 1999Assignee: Zeneca LimitedInventors: David Mark Haddleton, Andrew Victor Graham Muir, Stephen William Leeming, John Patrick O'Donnell, Stuart Nicholas Richards
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Patent number: 5804632Abstract: Process for the production of an aqueous polymer emulsion which process comprises:a) preparing a low molecular weight polymer containing acid-functional groups using a free-radical polymerisation process which employs a free-radical initiator and, for the purpose of controlling molecular weight, a transition metal chelate complex, wherein said low molecular weight polymer has a number average molecular weight within the range of from 500 to 50,000;b) conducting an aqueous emulsion polymerisation process to form an aqueous emulsion of a hydrophobic polymer from at least one olefinically unsaturated monomer, wherein the low molecular weight polymer of step a) is introduced to the aqueous medium of said emulsion polymerisation process before the start of and/or during said emulsion polymerisation process and becomes dissolved or dispersed in said aqueous medium.Type: GrantFiled: January 29, 1996Date of Patent: September 8, 1998Assignees: Zeneca Limited, Zeneca Resins BVInventors: David Mark Haddleton, John Christopher Padget, Gerardus Cornelis Overbeek
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Patent number: 5684101Abstract: Process for the free-radical polymerization of at least one olefinically unsaturated monomer, the polymerization being performed in the presence of a compound for effecting molecular weight control, being a CoII chelate of the following formula: ##STR1## wherein each group X is a divalent group which forms with the two carbon atoms to which it is bonded a pericondensed polycyclic group, being a group having 3 or more carbocyclic rings where the oxime-containing carbocyclic ring has carbon atoms in common with 2 or more of the other rings, the polycyclic group being unsubstituted (apart from the oxime groups) or having at least one hydrocarbyl substituent; and wherein each group Q is independently selected from F, Cl, Br, OH, C.sub.1-12 alkoxy, aryloxy, C.sub.Type: GrantFiled: October 11, 1996Date of Patent: November 4, 1997Assignee: Zeneca LimitedInventors: Andrew Victor Graham Muir, John Robert Lawson, David Mark Haddleton