Patents by Inventor Andrew Timothy Boam
Andrew Timothy Boam 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: 10792619Abstract: The present invention relates to a method for curing adhesives used in the manufacture of membrane modules containing polymeric membranes, particularly polyimide based membranes used for the nanofiltration or ultrafiltration of solutes dissolved in organic solvents using microwaves. To maximise the chemical resistance of the adhesive used in these organic solvent applications, it must be as fully reacted and crosslinked (“cured”) as possible. Typically, thermal processing (heating) of the entire membrane module is used to cure the adhesives. However, the time and temperature required to achieve this high degree of completion of reaction may damage the separation performance of the membrane contained within the membrane module. In one particular aspect, this process utilises microwaves to preferentially promote the curing of epoxy adhesives over the general heating of the membrane module.Type: GrantFiled: April 13, 2017Date of Patent: October 6, 2020Assignee: Evonik Degussa GmbHInventors: Fui Wen Lim, Andrew Guy Livingston, Andrew Timothy Boam
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Publication number: 20170216778Abstract: The present invention relates to a method for curing adhesives used in the manufacture of membrane modules containing polymeric membranes, particularly polyimide based membranes used for the nanofiltration or ultrafiltration of solutes dissolved in organic solvents using microwaves. To maximise the chemical resistance of the adhesive used in these organic solvent applications, it must be as fully reacted and crosslinked (“cured”) as possible. Typically, thermal processing (heating) of the entire membrane module is used to cure the adhesives. However, the time and temperature required to achieve this high degree of completion of reaction may damage the separation performance of the membrane contained within the membrane module. In one particular aspect, this process utilises microwaves to preferentially promote the curing of epoxy adhesives over the general heating of the membrane module.Type: ApplicationFiled: April 13, 2017Publication date: August 3, 2017Applicant: MEMBRANE EXTRACTION TECHNOLOGY LTD.Inventors: Fui Wen LIM, Andrew Guy LIVINGSTON, Andrew Timothy BOAM
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Publication number: 20150328595Abstract: A high mass transfer membrane for use in membrane phase contactors to extract a solute from an aqueous phase to a solvent phase and their method of preparation and use are disclosed. The membrane is formed from polyimide by phase inversion and may optionally be crosslinked to maintain stability even in the solvents from which the membranes were formed by phase phase inversion.Type: ApplicationFiled: March 11, 2015Publication date: November 19, 2015Inventors: Andrew Timothy BOAM, Andreia Manuela Martins MIRANDA, Andrew Guy LIVINGSTON
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Patent number: 8598376Abstract: There is provided a process for reducing the free fatty acid content of natural oils by contacting the crude natural oil with a solvent to produce an oil product phase substantially depleted in free fatty acids and a free fatty acid rich solvent phase containing the extracted free fatty acids and some of the glycerides, and processing the free fatty acid rich solvent phase with a membrane to recover the glycerides from the solvent phase, comprising the steps of: (a) contacting the crude natural oil with an immiscible solvent; (b) separating the deacidifed natural oil phase from the solvent phase; (c) providing a selectively permeable membrane having a first surface and a second surface; (d) transferring a portion of the solvent and a portion of the free fatty acids and a lesser portion of the glycerides from the first surface to the second surface across the membrane by contacting the free fatty acid rich solvent phase with the first surface, wherein the pressure at the first surface is greater than the pressType: GrantFiled: June 28, 2007Date of Patent: December 3, 2013Assignee: Evonik Membrance Extraction Technology LimitedInventors: Andrew Timothy Boam, Fui Wen Lim
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Publication number: 20120223014Abstract: A high mass transfer membrane for use in membrane phase contactors to extract a solute from an aqueous phase to a solvent phase and their method of preparation and use are disclosed. The membrane is formed from polyimide by phase inversion and may optionally be crosslinked to maintain stability even in the solvents from which the membranes were formed by phase phase inversion.Type: ApplicationFiled: June 7, 2010Publication date: September 6, 2012Applicant: Evonik Membrane Extraction Technology LimitedInventors: Andrew Timothy Boam, Andreja Manuela Martins Miranda, Andrew Guy Livingston
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Publication number: 20110168627Abstract: The present invention relates to a method for curing adhesives used in the manufacture of membrane modules containing polymeric membranes, particularly polyimide based membranes used for the nanofiltration or ultrafiltration of solutes dissolved in organic solvents using microwaves. To maximise the chemical resistance of the adhesive used in these organic solvent applications, it must be as fully reacted and crosslinked (“cured”) as possible. Typically, thermal processing (heating) of the entire membrane module is used to cure the adhesives. However, the time and temperature required to achieve this high degree of completion of reaction may damage the separation performance of the membrane contained within the membrane module. In one particular aspect, this process utilises microwaves to preferentially promote the curing of epoxy adhesives over the general heating of the membrane module.Type: ApplicationFiled: September 24, 2009Publication date: July 14, 2011Applicant: MEMBRANE EXTRACTION TECHNOLOGY LTD.Inventors: Fui Wen Lim, Andrew Guy Livingstone, Andrew Timothy Boam
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Patent number: 7960542Abstract: A process for the purification of an oligonucleotide synthon is provided. The process comprises subjecting an organic solution comprising an oligonucleotide synthon and lower molecular weight impurities to nanofiltration whereby the ratio of an oligonucleotide synthon to lower molecular weight impurities in the solution is increased after the nanofiltration. Preferably, the oligonucleotide synthon is a nucleoside phosphoramidite or nucleoside H-phosphonate. The nanofiltration membrane is preferably a polyimide membrane having a molecular weight cut off of 400.Type: GrantFiled: December 16, 2003Date of Patent: June 14, 2011Assignee: Avecia Biotechnology, Inc.Inventors: Andrew Timothy Boam, Andrew Guy Livingston, Dinesh Nair, Paul McCormac, Stephen Hargreaves
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Publication number: 20100130761Abstract: There is provided a process for reducing the free fatty acid content of natural oils by contacting the crude natural oil with a solvent to produce an oil product phase substantially depleted in free fatty acids and a free fatty acid rich solvent phase containing the extracted free fatty acids and some of the glycerides, and processing the free fatty acid rich solvent phase with a membrane to recover the glycerides from the solvent phase, comprising the steps of: (a) contacting the crude natural oil with an immiscible solvent; (b) separating the deacidifed natural oil phase from the solvent phase; (c) providing a selectively permeable membrane having a first surface and a second surface; (d) transferring a portion of the solvent and a portion of the free fatty acids and a lesser portion of the glycerides from the first surface to the second surface across the membrane by contacting the free fatty acid rich solvent phase with the first surface, wherein the pressure at the first surface is greater than the pressType: ApplicationFiled: June 28, 2007Publication date: May 27, 2010Applicants: DUE MILJØ AS, MEMBRANE EXTRACTION TECHNOLOGY LTD.Inventors: Andrew Timothy Boam, Fui Wen Lim
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Patent number: 6586638Abstract: There is provided a process for removing and recovering one or more unassociated phenolic compounds dissolved in aqueous fluid, the process comprising the steps of: (a) transferring the one or more unassociated phenolic compounds from the aqueous fluid to an alkaline stripping solution, wherein transfer of the one or more unassociated phenolic compounds from the aqueous fluid to the alkaline stripping solution occurs across a membrane; wherein the membrane is a non porous, selectively permeable membrane; (b) regulating the volume of alkaline stripping solution employed relative to the volume of aqueous fluid treated so that the total phenolic compound concentration in the alkaline stripping solution, comprising the sum of the dissociated and unassociated phenolic compound concentrations, is above the solubility of the phenolic compounds in the acidified stripping solution of step (d); (c) regulating the pH of the alkaline stripping solution in contact with the membrane to a value at least 0.Type: GrantFiled: August 28, 2002Date of Patent: July 1, 2003Assignee: Membrane Extraction Technology LimitedInventors: Shengfu Zhang, Jean-Pierre Arcangeli, Andrew Guy Livingston, Andrew Timothy Boam