Patents by Inventor David John Cole-Hamilton
David John Cole-Hamilton 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: 9908826Abstract: The invention relates to a method of alkene metathesis. In the method, at least one monoalkene is subjected to ethenolysis in the presence of a diene. The invention also relates to the use of a diene to promote an ethenolysis reaction conducted on a monoalkene.Type: GrantFiled: January 28, 2015Date of Patent: March 6, 2018Assignee: University Court of the University of St AndrewsInventors: Jennifer Julis, Stuart Bartlett, David John Cole-Hamilton
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Publication number: 20170174608Abstract: The invention relates to a method of alkene metathesis. In the method, at least one monoalkene is subjected to ethenolysis in the presence of a diene. The invention also relates to the use of a diene to promote an ethenolysis reaction conducted on a monoalkene.Type: ApplicationFiled: January 28, 2015Publication date: June 22, 2017Inventors: Jennifer Julis, Stuart Bartlett, David John Cole-Hamilton
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Patent number: 9670109Abstract: The invention provides a method of alkene metathesis comprising contacting at least a first alkene, which is cardanol and/or anacardic acid, with an alkylidene ruthenium alkene metathesis catalyst comprising two ligands P1 and P2, which may be the same or different and of formula P(R1)3, in which P is a phosphorus atom coordinated to the ruthenium ion and each R1 is independently an optionally substituted alkyl or alkoxy group; or two R1 groups within one P1 or P2 ligand constitute an optionally substituted bicycloalkyl.Type: GrantFiled: September 11, 2013Date of Patent: June 6, 2017Assignee: University Court of the University of St. AndrewsInventors: Jennifer Julis, David John Cole-Hamilton, Catherine Cazin
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Publication number: 20150321981Abstract: The invention provides a method of alkene metathesis comprising contacting at least a first alkene, which is cardanol and/or anacardic acid, with an alkylidene ruthenium alkene metathesis catalyst comprising two ligands P1 and P2, which may be the same or different and of formula P(R1)3, in which P is a phosphorus atom coordinated to the ruthenium ion and each R1 is independently an optionally substituted alkyl or alkoxy group; or two R1 groups within one P1 or P2 ligand constitute an optionally substituted bicycloalkyl.Type: ApplicationFiled: September 11, 2013Publication date: November 12, 2015Inventors: Jennifer Julis, David John Cole-Hamilton, Catherine Cazin
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Patent number: 8912240Abstract: This invention relates to a process for making methanol and ethanol from carbon dioxide and hydrogen. The process includes contacting a mixture of carbon dioxide and hydrogen with a catalyst system containing a ruthenium compound—and optionally, a chloride or bromide-containing compound—dispersed in a low-melting tetraorganophosphonium chloride or bromide salt under conditions effective to produce methanol and ethanol. The invention also relates to a process for making methanol and ethanol from carbon monoxide and water using the same catalyst system.Type: GrantFiled: February 22, 2013Date of Patent: December 16, 2014Assignee: Eastman Chemical CompanyInventors: Jan Hendrik Blank, David John Cole-Hamilton, Robert Thomas Hembre, James Allen Ponasik, Jr.
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Publication number: 20140243435Abstract: This invention relates to a process for making methanol and ethanol from carbon dioxide and hydrogen. The process includes contacting a mixture of carbon dioxide and hydrogen with a catalyst system containing a ruthenium compound—and optionally, a chloride or bromide-containing compound—dispersed in a low-melting tetraorganophosphonium chloride or bromide salt under conditions effective to produce methanol and ethanol. The invention also relates to a process for making methanol and ethanol from carbon monoxide and water using the same catalyst system.Type: ApplicationFiled: February 22, 2013Publication date: August 28, 2014Applicant: EASTMAN CHEMICAL COMPANYInventors: Jan Hendrik BLANK, David John COLE-HAMILTON, Robert Thomas HEMBRE, James Allen PONASIK, JR.
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Publication number: 20130225873Abstract: This invention concerns a promoted catalyst system for making one or more alkanols from synthesis gas. The catalyst system contains a ruthenium compound and a halogen promoter dispersed in a low-melting tetraorganophosphonium salt. The halogen promoter is a compound capable of generating HX (where X?Cl, Br, or I) under reaction conditions. The invention also concerns a process for selectively preparing one or more alkanols from synthesis gas using the promoted catalyst system.Type: ApplicationFiled: August 24, 2012Publication date: August 29, 2013Applicant: EASTMAN CHEMICAL COMPANYInventors: Jan Hendrik Blank, David John Cole-Hamilton, Robert Thomas Hembre, James Allen Ponasik, JR.
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Patent number: 8377714Abstract: Novel conjugates of nanoparticles are provided and have particular utility in the detection of latent fingerprints by their ability to bind to a fingerprint residue. The conjugate comprises a nanoparticle attached to a linker group having a terminal reactive moiety, wherein said nanoparticle comprises a core of a first semiconductor material having a first luminescence and a shell of a second material which at least partially surrounds the core. The conjugated nanoparticle can bind to the fingerprint residue and can be detected using fluorescence.Type: GrantFiled: June 18, 2009Date of Patent: February 19, 2013Assignee: The University Court of the University of St AndrewsInventors: David John Cole-Hamilton, Ifor David William Sámuel, Jennifer Rachel Amey, John William Bond
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Publication number: 20110104815Abstract: Novel conjugates of nanoparticles are provided and have particular utility in the detection of latent fingerprints by their ability to bind to a fingerprint residue. The conjugate comprises a nanoparticle attached to a linker group having a terminal reactive moiety, wherein said nanoparticle comprises a core of a first semiconductor material having a first luminescence and a shell of a second material which at least partially surrounds the core. The conjugated nanoparticle can bind to the fingerprint residue and can be detected using fluorescence.Type: ApplicationFiled: June 18, 2009Publication date: May 5, 2011Inventors: David John Cole-Hamilton, Ifor David William Samuel, Jenifer Rachel Amey, John William Bond
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Patent number: 7790932Abstract: A catalyst, useful for the hydroformylation of allyl alcohol, is described. The catalyst comprises a rhodium complex and a 6-bis(3,5-dialkylphenyl)phosphino-N-pivaloyl-2-aminopyridine or a 3-bis(3,5-dialkylphenyl)phosphino-2H-isoquinolin-1-one. The invention also includes a process for the production of 4-hydroxybutyraldehyde comprising reacting allyl alcohol with a mixture of carbon monoxide and hydrogen in the presence of a solvent and the catalyst. The process gives a high ratio of the linear product 4-hydroxybutyraldehyde to the branched co-product 3-hydroxy-2-methylpropionaldehyde.Type: GrantFiled: December 21, 2009Date of Patent: September 7, 2010Assignee: Lyondell Chemical Technology, L.P.Inventors: Daniel F. White, Ine Boogaerts, David John Cole-Hamilton
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Patent number: 7655821Abstract: A direct hydrocarbonylation process for the production of 1,4-butanediol is described. The process comprises reacting allyl alcohol with carbon monoxide and hydrogen in an alcohol solvent in the presence of a catalyst system comprising a rhodium complex, a trialkyl phosphine, and a diphosphine. The process gives a high yield of 1,4-butanediol in a one-step reaction.Type: GrantFiled: November 25, 2008Date of Patent: February 2, 2010Assignee: Lyondell Chemical Technology, L.P.Inventors: Daniel F. White, David John Cole-Hamilton, Ine Boogaerts
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Patent number: 7612241Abstract: A process for the production of 4-hydroxybutyraldehyde is described. The process comprises reacting allyl alcohol with a mixture of carbon monoxide and hydrogen in the presence of a solvent and a catalyst system comprising a rhodium complex and a substituted or unsubstituted 4,5-bis(di-n-alkylphosphino)xanthene. The process gives high yield of 4-hydroxybutyraldehyde compared to 3-hydroxy-2-methylpropionaldehyde.Type: GrantFiled: March 23, 2009Date of Patent: November 3, 2009Assignee: Lyondell Chemical Technology, L.P.Inventors: Daniel F. White, Wilfred P. Shum, David John Cole-Hamilton