Patents by Inventor Clive Roberts
Clive Roberts 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: 11767277Abstract: The present invention provides a process for preparing 3,3,3-trifluoropropene (1243zf), the process comprising: (a) fluorinating CCl3CH2CH2Cl (250fb) to produce a reaction product comprising CF3CH2CH2Cl (253fb) in the liquid phase in a first reactor, using HF as the fluorinating agent; and (b) (i) dehydrohalogenating 253fb to produce 1243zf in the vapour phase in the present of a catalyst in a second reactor; or (b)(ii) dehydrohalogenating 253fb to produce 1243zf in a second reactor, wherein the reaction product comprising 253fb produced in step (a) has subjected to one or more purification steps before step (b). The present invention also provides an azeotropic or near-azeotropic composition comprising HF and 253fb.Type: GrantFiled: April 30, 2021Date of Patent: September 26, 2023Assignee: Mexichem Fluor S.A. de C.V.Inventors: Emma Jayne Hodgson, Clare Mary Skae, Gary Lloyd, Claire Elizabeth McGuinness, Clive Robert Giddis, James Henry Murray
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Patent number: 11572327Abstract: The present invention provides a process for preparing 1,1,1,2,2-pentafluoropropane (245cb), the process comprising gas phase catalytic dehydrochlorination of a composition comprising 1,1,1-trifluoro-2,3-dichloropropane (243db) to produce an intermediate composition comprising 3,3,3-trifluoro-2-chloro-prop-1-ene (CF3CCI?CH2, 1233xf), hydrogen chloride (HCl) and, optionally, air; and gas phase catalytic fluorination with hydrogen fluoride (HF) of the intermediate composition to produce a reactor product composition comprising 245cb, HF, HCl and air; wherein the process is carried out with a co-feed of air.Type: GrantFiled: October 8, 2021Date of Patent: February 7, 2023Assignee: Mexichem Fluor S.A. de C.V.Inventors: Sheryl Louise Johnson, Stephen Andrew Flaherty, Clive Robert Giddis
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Publication number: 20220098131Abstract: The present invention provides a process for preparing 1,1,1,2,2-pentafluoropropane (245cb), the process comprising gas phase catalytic dehydrochlorination of a composition comprising 1,1,1-trifluoro-2,3-dichloropropane (243db) to produce an intermediate composition comprising 3,3,3-trifluoro-2-chloro-prop-1-ene (CF3CCI?CH2, 1233xf), hydrogen chloride (HCl) and, optionally, air; and gas phase catalytic fluorination with hydrogen fluoride (HF) of the intermediate composition to produce a reactor product composition comprising 245cb, HF, HCl and air; wherein the process is carried out with a co-feed of air.Type: ApplicationFiled: October 8, 2021Publication date: March 31, 2022Applicant: Mexichem Fluor S.A. de C.V.Inventors: Sheryl Louise Johnson, Stephen Andrew Flaherty, Clive Robert Giddis
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Publication number: 20220033330Abstract: The present invention provides a process for preparing 3,3,3-trifluoropropene (1243zf), the process comprising: (a) fluorinating CCl3CH2CH2Cl (250fb) to produce a reaction product comprising CF3CH2CH2Cl (253fb) in the liquid phase in a first reactor, using HF as the fluorinating agent; and (b) (i) dehydrohalogenating 253fb to produce 1243zf in the vapour phase in the present of a catalyst in a second reactor; or (b)(ii) dehydrohalogenating 253fb to produce 1243zf in a second reactor, wherein the reaction product comprising 253fb produced in step (a) has subjected to one or more purification steps before step (b). The present invention also provides an azeotropic or near-azeotropic composition comprising HF and 253fb.Type: ApplicationFiled: April 30, 2021Publication date: February 3, 2022Applicant: Mexichem Fluor S.A. de C.V.Inventors: Emma Jayne HODGSON, Clare Mary Skae, Gary Lloyd, Claire Elizabeth McGuinness, Clive Robert Giddis, James Henry Murray
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Patent number: 11155506Abstract: The present invention provides a process for preparing 1,1,1,2,2-pentafluoropropane (245cb), the process comprising gas phase catalytic dehydrochlorination of a composition comprising 1,1,1-trifluoro-2,3-dichloropropane (243db) to produce an intermediate composition comprising 3,3,3-trifluoro-2-chloro-prop-1-ene (CF3CCl?CH2, 1233xf), hydrogen chloride (HCl) and, optionally, air; and gas phase catalytic fluorination with hydrogen fluoride (HF) of the intermediate composition to produce a reactor product composition comprising 245cb, HF, HCl and air; wherein the process is carried out with a co-feed of air.Type: GrantFiled: April 22, 2020Date of Patent: October 26, 2021Assignee: Mexichem Fluor S.A. de C.V.Inventors: Sheryl Louise Johnson, Stephen Andrew Flaherty, Clive Robert Giddis
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Patent number: 10899686Abstract: The present invention provides an integrated process for preparing 2,3,3, 3-tetrafluoropropene (1234yf), the process comprising: (a) vapour phase catalytic fluorination of a first composition comprising 3,3,3-trifluoro-2-chloro-prop-1-ene (CF3C—CNCH2, 1233xf) with hydrogen fluoride (HF) in a fluorination reactor to produce a fluorination product stream comprising 1,1,2,2-pentafluoropropane (245cb), HF and HCI; (b) vapour phase catalytic dehydrofluorination composition comprising 245cb in a dehydrofluorination reactor to produce a dehydrofluorination product stream comprising 1234yf and HF; wherein the fluorination product stream and the dehydrofluorination product stream are combined and subjected to (c) purification to produce a composition comprising 245cb and a 1234yf product stream.Type: GrantFiled: July 14, 2016Date of Patent: January 26, 2021Assignee: MEXICHEM FLUOR S.A. DE C.V.Inventors: Sheryl Louise Johnson, Stephen Andrew Flaherty, James Henry Murray, Fiona Louise Smith, Jonathan Junhay Man, Clive Robert Giddis
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Patent number: 10799778Abstract: The present invention is a unique advanced hybrid iron type golf club having a curved face. The golf club incorporates the discovery of unique relationships among key club head engineering variables such as volume, blade length, heel blade length section, Zcg, front-to-back dimension, and club moment arm.Type: GrantFiled: August 31, 2018Date of Patent: October 13, 2020Assignee: TAYLOR MADE GOLF COMPANY, INCInventors: Michael Guerrette, Tim Reed, Clive Roberts
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Publication number: 20200247734Abstract: The present invention provides a process for preparing 1,1,1,2,2-pentafluoropropane (245cb), the process comprising gas phase catalytic dehydrochlorination of a composition comprising 1,1,1-trifluoro-2,3-dichloropropane (243db) to produce an intermediate composition comprising 3,3,3-trifluoro-2-chloro-prop-1-ene (CF3CCI?CH2, 1233xf), hydrogen chloride (HCl) and, optionally, air; and gas phase catalytic fluorination with hydrogen fluoride (HF) of the intermediate composition to produce a reactor product composition comprising 245c, HF, HCl and air; wherein the process is carried out with a co-feed of air.Type: ApplicationFiled: April 22, 2020Publication date: August 6, 2020Applicant: MEXICHEM FLUOR S.A. DE C.V.Inventors: SHERYL LOUISE JOHNSON, STEPHEN ANDREW FLAHERTY, CLIVE ROBERT GIDDIS
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Patent number: 10689316Abstract: The present invention provides a process for preparing 3,3,3-trifluoropropene (1243zf), the process comprising: (a)fluorinating CCl3CH2CH2CI (250fb) to produce a reaction product comprising CF3CH2CH2CI (253fb) in the liquid phase in a first reactor, using HF as the fluorinating agent; and (b)(i) dehydrohalogenating 253fb to produce 1243zf in the vapour phase in the presence of a catalyst in a second reactor; or (b)(ii) dehydrohalogenating 253fb to produce 1243zf in a second reactor, wherein the reaction product comprising 253fb produced in step (a) has subjected to one or more purification steps before step (b). The present invention also provides an azeotropic or near-azeotropic composition comprising HF and 253fb.Type: GrantFiled: July 14, 2016Date of Patent: June 23, 2020Assignee: MEXICAN FLUOR S.A. DE C.V.Inventors: Emma Jayne Hodgson, Claire Elizabeth McGuinness, Clive Robert Giddis, James Henry Murray, Clare Mary Skae, Gary Lloyd
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Patent number: 10669219Abstract: The present invention provides a process for preparing 1,1,1,2,2-pentafluoropropane (245cb), the process comprising gas phase catalytic dehydrochlorination of a composition comprising 1,1,1-trifluoro-2,3-dichloropropane (243db) to produce an intermediate composition comprising 3,3,3-trifluoro-2-chloro-prop-1-ene (CF3CCI?CH2, 1233xf), hydrogen chloride (HCI) and, optionally, air; and gas phase catalytic fluorination with hydrogen fluoride (HF) of the intermediate composition to produce a reactor product composition comprising 245cb, HF, HCI and air; wherein the process is carried out with a co-feed of air.Type: GrantFiled: July 14, 2016Date of Patent: June 2, 2020Assignee: MEXICHEM FLUOR S.A. DE C.V.Inventors: Sheryl Louise Johnson, Stephen Andrew Flaherty, Clive Robert Giddis
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Publication number: 20190330130Abstract: The present invention provides a process for preparing 1,1,1,2,2-pentafluoropropane (245cb), the process comprising gas phase catalytic dehydrochlorination of a composition comprising 1,1,1-trifluoro-2,3-dichloropropane (243db) to produce an intermediate composition comprising 3,3,3-trifluoro-2-chloro-prop-1-ene (CF3CCI=CH2, 1233xf), hydrogen chloride (HCI) and, optionally, air; and gas phase catalytic fluorination with hydrogen fluoride (HF) of the intermediate composition to produce a reactor product composition comprising 245cb, HF, HCI and air; wherein the process is carried out with a co-feed of air.Type: ApplicationFiled: July 14, 2016Publication date: October 31, 2019Applicants: MEXICHEM FLUOR S.A. DE C.V., MEXICHEM UK LIMITEDInventors: SHERYL LOUISSE JOHNSON, STEPHEN ANDREW FLAHERTY, CLIVE ROBERT GIDDIS
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Publication number: 20190169098Abstract: The present invention provides a process for preparing 3,3,3-trifluoropropene (1243zf), the process comprising: (a)fluorinating CCI3CH2CH2CI (250fb) to produce a reaction product comprising CF3CH2CH2CI (253fb) in the liquid phase in a first reactor, using HF as the fluorinating agent; and (b)(i) dehydrohalogenating 253fb to produce 1243zf in the vapour phase in the present of a catalyst in a second reactor; or (b)(ii) dehydrohalogenating 253fb to produce 1243zf in a second reactor, wherein the reaction product comprising 253fb produced in step (a) has subjected to one or more purification steps before step (b). The present invention also provides an azeotropic or near-azeotropic composition comprising HF and 253fb.Type: ApplicationFiled: July 14, 2016Publication date: June 6, 2019Applicant: MEXICHEM FLUOR S.A. DE C.V.Inventors: EMMA J HODGSON, CLAIRE ELIZABETH McGUINNESS, CLIVE ROBERT GIDDIS, JAMES HENRY MURRAY, CLARE MARY SKAE, GARY LLOYD
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Publication number: 20190009145Abstract: The present invention is a unique advanced hybrid iron type golf club having a curved face. The golf club incorporates the discovery of unique relationships among key club head engineering variables such as volume, blade length, heel blade length section, Zcg, front-to-back dimension, and club moment arm.Type: ApplicationFiled: August 31, 2018Publication date: January 10, 2019Inventors: Michael Guerrette, Tim Reed, Clive Roberts
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Patent number: 10065090Abstract: The present invention is a unique advanced hybrid iron type golf club having a curved face. The golf club incorporates the discovery of unique relationships among key club head engineering variables such as volume, blade length, heel blade length section, Zcg, front-to-back dimension, and club moment arm.Type: GrantFiled: May 1, 2017Date of Patent: September 4, 2018Assignee: TAYLOR MADE GOLF COMPANY, INCInventors: Michael Guerrette, Tim Reed, Clive Roberts
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Publication number: 20180208528Abstract: The present invention provides a method of producing 2,3,3,3-tetrafluoropropene (HFO-1234yf), wherein the method comprises two or more reaction steps, at least one of said reaction steps comprising the production of 1,3,3,3-tetrafluoropropene (HFO-1234ze) and/or one or more HFO-1234ze precursors from one or more HFO-1234yf precursors, wherein at least a portion of the HFO-1234ze is recovered.Type: ApplicationFiled: July 14, 2016Publication date: July 26, 2018Applicants: MEXICHEM FLUOR S.A. DE C.V., MEXICHEM UK LIMITEDInventors: CLIVE ROBERT GIDDIS, FIONA LOUISE SMITH, JONATHAN JUNHAY MAN, CARA JOY CRONSHAW
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Publication number: 20180002160Abstract: The application describes MEMS transducer structures comprising a membrane structure having a flexible membrane layer and at least one electrode layer. The electrode layer is spaced from the flexible membrane layer such that at least one air volume extends between the material of the electrode layer and the membrane layer. The electrode layer is supported relative to the flexible membrane by means of a support structure which extends between the first electrode layer and the flexible membrane layer.Type: ApplicationFiled: June 29, 2017Publication date: January 4, 2018Applicant: Cirrus Logic International Semiconductor Ltd.Inventors: Marek Sebastian PIECHOCINSKI, Colin Robert JENKINS, Clive Robert GRAHAM
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Publication number: 20180002161Abstract: The present application describes MEMS transducer having a membrane and a membrane electrode. The membrane and membrane electrode form a two-layer structure. The membrane electrode is in the form of a lattice of conductive material. The pitch of the lattice and/or the size of the openings varies from a central region of the membrane electrode to a region laterally outside the central region.Type: ApplicationFiled: June 29, 2017Publication date: January 4, 2018Applicant: Cirrus Logic International Semiconductor Ltd.Inventors: Colin Robert JENKINS, Scott Lyall CARGILL, Clive Robert GRAHAM
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Patent number: 9759252Abstract: A shaft assembly includes one or more axially-arranged plies having a plurality of bundles of strands. Each strand is formed of a ultra-high modulus carbon fiber material. One or more strands of glass fiber are wrapped around each bundle of the plurality of bundles. A volume of resin injected into the one or more axially-arranged plies and the assembly is cured via a resin transfer molding process. A method of forming a shaft assembly includes arranging a plurality of strands of ultra-high modulus carbon fiber material into a plurality of bundles. Each bundle of the plurality of bundles is wrapped with one or more strands of glass fiber material. The plurality of bundles are arranged into one or more axially-extending plies at a mandrel. A volume of resin is injected into the plurality of bundles and is cured to form the shaft assembly.Type: GrantFiled: September 5, 2013Date of Patent: September 12, 2017Assignee: SIKORSKY AIRCRAFT CORPORATIONInventors: Dean Nguyen, Geoffrey Clive Robert Davis
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Publication number: 20170232313Abstract: The present invention is a unique advanced hybrid iron type golf club having a curved face. The golf club incorporates the discovery of unique relationships among key club head engineering variables such as volume, blade length, heel blade length section, Zcg, front-to-back dimension, and club moment arm.Type: ApplicationFiled: May 1, 2017Publication date: August 17, 2017Inventors: Michael Guerrette, Tim Reed, Clive Roberts
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Patent number: 9662548Abstract: The present invention is a unique advanced hybrid iron type golf club. The club is characterized by a long heel blade length section, while having a small club moment arm, Zcg, and volume. The golf club incorporates the discovery of unique relationships among key club head engineering variables.Type: GrantFiled: March 27, 2014Date of Patent: May 30, 2017Assignee: TAYLOR MADE GOLF COMPANY, INC.Inventors: Michael Guerrette, Tim Reed, Clive Roberts