Patents by Inventor Rakesh Vikraman Nair Rema
Rakesh Vikraman Nair Rema 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: 9790162Abstract: The present invention provides a chromatographic separation process for recovering a polyunsaturated fatty acid (PUFA) product, from a feed mixture, which process comprises introducing the feed mixture to a simulated or actual moving bed chromatography apparatus having a plurality of linked chromatography columns containing, as eluent, an aqueous alcohol, wherein the apparatus has a plurality of zones comprising at least a first zone and a second zone, each zone having an extract stream and a raffinate stream from which liquid can be collected from said plurality of linked chromatography columns, and wherein (a) a raffinate stream containing the PUFA product together with more polar components is collected from a column in the first zone and introduced to a nonadjacent column in the second zone, and/or (b) an extract stream containing the PUFA product together with less polar components is collected from a column in the second zone and introduced to a nonadjacent column in the first zone, said PUFA product beType: GrantFiled: September 30, 2015Date of Patent: October 17, 2017Assignee: BASF PHARMA (CALLANISH) LIMITEDInventors: Adam Kelliher, Angus Morrison, Anil Oroskar, Rakesh Vikraman Nair Rema, Abhilesh Agarwal
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Patent number: 9771542Abstract: The present invention provides a chromatographic separation process for recovering a polyunsaturated fatty acid (PUFA) product from a feed mixture, which process comprises passing the feed mixture through one or more chromatographic columns containing, as eluent, an aqueous organic solvent, wherein the temperature of at least one of the chromatographic columns through which the feed mixture is passed is greater than room temperature.Type: GrantFiled: April 21, 2016Date of Patent: September 26, 2017Assignee: BASF Pharma Callanish Ltd.Inventors: Adam Kelliher, Angus Morrison, Anil Oroskar, Rakesh Vikraman Nair Rema, Abhilesh Agarwal
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Patent number: 9695382Abstract: The present invention provides a chromatographic separation process for recovering a polyunsaturated fatty acid (PUFA) product from a feed mixture which is a fish oil or which is derived from fish oil, which process comprises the steps of: (i) purifying the feed mixture in a chromatographic separation step, to obtain a first intermediate product; and (ii) purifying the first intermediate product obtained in (i) in a simulated or actual moving bed chromatographic separation step, to obtain a second intermediate product; and (iii) purifying the second intermediate product obtained in (ii) in a simulated or actual moving bed chromatographic separation step, to obtain the PUFA product; wherein an aqueous organic solvent is used as eluent in each separation step; saturated and/or monounsaturated fatty acids present in the feed mixture are removed in the first separation step; the PUFA product is separated from different components of the feed mixture in steps (ii) and (iii); and the PUFA product obtained in the tType: GrantFiled: March 10, 2016Date of Patent: July 4, 2017Assignee: BASF PHARMA (CALLANISH) LIMITEDInventors: Adam Kelliher, Angus Morrison, Anil Oroskar, Rakesh Vikraman Nair Rema, Abhilesh Agarwal
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Patent number: 9493392Abstract: The present invention provides a chromatographic separation process for recovering a polyunsaturated fatty acid (PUFA) product, from a feed mixture, which process comprises introducing the feed mixture to a simulated or actual moving bed chromatography apparatus having a plurality of linked chromatography columns containing, as eluent, an aqueous alcohol, wherein the apparatus has a plurality of zones comprising at least a first zone and a second zone, each zone having an extract stream and a raffinate stream from which liquid can be collected from said plurality of linked chromatography columns, and wherein (a) a raffinate stream containing the PUFA product together with more polar components is collected from a column in the first zone and introduced to a nonadjacent column in the second zone, and/or (b) an extract stream containing the PUFA product together with less polar components is collected from a column in the second zone and introduced to a nonadjacent column in the first zone, said PUFA product beType: GrantFiled: September 30, 2015Date of Patent: November 15, 2016Assignee: BASF Pharma (Callanish) LimitedInventors: Adam Kelliher, Angus Morrison, Anil Oroskar, Rakesh Vikraman Nair Rema, Abhilesh Agarwal
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Publication number: 20160312148Abstract: The present invention provides a chromatographic separation process for recovering a polyunsaturated fatty acid (PUFA) product from a feed mixture, which process comprises passing the feed mixture through one or more chromatographic columns containing, as eluent, an aqueous organic solvent, wherein the temperature of at least one of the chromatographic columns through which the feed mixture is passed is greater than room temperature.Type: ApplicationFiled: April 21, 2016Publication date: October 27, 2016Inventors: Adam Kelliher, Angus Morrison, Anil Oroskar, Rakesh Vikraman Nair Rema, Abhilesh Agarwal
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Publication number: 20160186092Abstract: The present invention provides a chromatographic separation process for recovering a polyunsaturated fatty acid (PUFA) product from a feed mixture which is a fish oil or which is derived from fish oil, which process comprises the steps of: (i) purifying the feed mixture in a chromatographic separation step, to obtain a first intermediate product; and (ii) purifying the first intermediate product obtained in (i) in a simulated or actual moving bed chromatographic separation step, to obtain a second intermediate product; and (iii) purifying the second intermediate product obtained in (ii) in a simulated or actual moving bed chromatographic separation step, to obtain the PUFA product; wherein an aqueous organic solvent is used as eluent in each separation step; saturated and/or monounsaturated fatty acids present in the feed mixture are removed in the first separation step; the PUFA product is separated from different components of the feed mixture in steps (ii) and (iii); and the PUFA product obtained in the tType: ApplicationFiled: March 10, 2016Publication date: June 30, 2016Inventors: Adam Kelliher, Angus Morrison, Anil Oroskar, Rakesh Vikraman Nair Rema, Abhilesh Agarwal
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Patent number: 9375657Abstract: A flash chromatography apparatus which provides an improved apparatus for large and medium commercial scale flash chromatography columns. More particularly, the invention relates to a flash chromatography column and cartridge system for positioning and ease of loading and unloading of stationary phase agent in the flash chromatography column. The flash chromatography column further provides flow distributors to support the stationary phase and permit plug flow through the column. The apparatus of the present invention is a modular and can be disposed in any configuration to reduce maintenance cost and downtime in a commercial installation. Flash chromatography is widely used for purification of low molecular weight organic compounds and products of organic synthetic reactions.Type: GrantFiled: November 12, 2013Date of Patent: June 28, 2016Assignee: Orochem Technologies, Inc.Inventors: Anil R. Oroskar, Asha A. Oroskar, Ved Bhushan Gulati, Rakesh Vikraman Nair Rema
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Patent number: 9370730Abstract: The present invention provides a chromatographic separation process for recovering a polyunsaturated fatty acid (PUFA) product, from a feed mixture, which process comprises introducing the feed mixture to a simulated or actual moving bed chromatography apparatus having a plurality of linked chromatography columns containing, as eluent, an aqueous organic solvent, wherein the apparatus has a plurality of zones comprising at least a first zone and second zone, each zone having an extract stream and a raffinate stream from which liquid can be collected from said plurality of linked chromatography columns, and wherein (a) a raffinate stream containing the PUFA product together with more polar components is collected from a column in the first zone and introduced to a nonadjacent column in the second zone, and/or (b) an extract stream containing the PUFA product together with less polar components is collected from a column in the second zone and introduced to a nonadjacent column in the first zone, said PUFA prodType: GrantFiled: July 6, 2012Date of Patent: June 21, 2016Assignee: BASF PHARMA CALLANISH LIMITEDInventors: Adam Kelliher, Angus Morrison, Anil Oroskar, Rakesh Vikraman Nair Rema, Abhilesh Agarwal
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Patent number: 9347020Abstract: The present invention provides a chromatographic separation process for recovering a polyunsaturated fatty acid (PUFA) product from a feed mixture, which process comprises passing the feed mixture through one or more chromatographic columns containing, as eluent, an aqueous organic solvent, wherein the temperature of at least one of the chromatographic columns through which the feed mixture is passed is greater than room temperature.Type: GrantFiled: July 6, 2012Date of Patent: May 24, 2016Assignee: BASF Pharma Callanish LimitedInventors: Adam Kelliher, Angus Morrison, Anil Oroskar, Rakesh Vikraman Nair Rema, Abhilesh Agarwal
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Patent number: 9321715Abstract: The present invention provides a chromatographic separation process for recovering a polyunsaturated fatty acid (PUFA) product, from a feed mixture, which process comprises introducing the feed mixture to a simulated or actual moving bed chromatography apparatus having a plurality of linked chromatography columns containing, as eluent, an aqueous alcohol, wherein the apparatus has a plurality of zones comprising at least a first zone and second zone, each zone having an extract stream and a raffinate stream from which liquid can be collected from said plurality of linked chromatography columns, and wherein (a) a raffinate stream containing the PUFA product together with more polar components is collected from a column in the first zone and introduced to a nonadjacent column in the second zone, and/or (b) an extract stream containing the PUFA product together with less polar components is collected from a column in the second zone and introduced to a nonadjacent column in the first zone, said PUFA product beinType: GrantFiled: December 24, 2010Date of Patent: April 26, 2016Assignee: BASF Pharma (Callanish) LimitedInventors: Adam Kelliher, Angus Morrison, Anil Oroskar, Rakesh Vikraman Nair Rema, Abhilesh Agarwal
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Patent number: 9315762Abstract: The present invention provides a chromatographic separation process for recovering a polyunsaturated fatty acid (PUFA) product from a feed mixture which is a fish oil or which is derived from fish oil, which process comprises the steps of: (i) purifying the feed mixture in a chromatographic separation step, to obtain a first intermediate product; and (ii) purifying the first intermediate product obtained in (i) in a simulated or actual moving bed chromatographic separation step, to obtain a second intermediate product; and (iii) purifying the second intermediate product obtained in (ii) in a simulated or actual moving bed chromatographic separation step, to obtain the PUFA product; wherein an aqueous organic solvent is used as eluent in each separation step; saturated and/or monounsaturated fatty acids present in the feed mixture are removed in the first separation step; the PUFA product is separated from different components of the feed mixture in steps (ii) and (iii); and the PUFA product obtained in the thType: GrantFiled: July 6, 2012Date of Patent: April 19, 2016Assignee: BASF Pharma Callanish LimitedInventors: Adam Kelliher, Angus Morrison, Anil Oroskar, Rakesh Vikraman Nair Rema, Abhilesh Agarwal
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Patent number: 9260677Abstract: The present invention provides a chromatographic separation process for recovering a polyunsaturated fatty acid (PUFA) product from a feed mixture, which process comprises the steps of: (i) purifying the feed mixture in a first separation step in a simulated or actual moving bed chromatography apparatus having a plurality of linked chromatography columns containing, as eluent, an aqueous organic solvent, to obtain an intermediate product; and (ii) purifying the intermediate product obtained in (i) in a second separation step using a simulated or actual moving bed chromatography apparatus having a plurality of linked chromatography columns containing, as eluent, an aqueous organic solvent, to obtain the PUFA product; wherein (a) the first and second separation steps are carried out sequentially on the same chromatography apparatus, the intermediate product being recovered between the first and second separation steps and the process conditions in the chromatography apparatus being adjusted between the first anType: GrantFiled: July 6, 2012Date of Patent: February 16, 2016Assignee: BASF Pharma Callanish LimitedInventors: Adam Kelliher, Angus Morrison, Anil Oroskar, Rakesh Vikraman Nair Rema, Abhilesh Agarwal
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Publication number: 20160016877Abstract: The present invention provides a chromatographic separation process for recovering a polyunsaturated fatty acid (PUFA) product, from a feed mixture, which process comprises introducing the feed mixture to a simulated or actual moving bed chromatography apparatus having a plurality of linked chromatography columns containing, as eluent, an aqueous alcohol, wherein the apparatus has a plurality of zones comprising at least a first zone and a second zone, each zone having an extract stream and a raffinate stream from which liquid can be collected from said plurality of linked chromatography columns, and wherein (a) a raffinate stream containing the PUFA product together with more polar components is collected from a column in the first zone and introduced to a nonadjacent column in the second zone, and/or (b) an extract stream containing the PUFA product together with less polar components is collected from a column in the second zone and introduced to a nonadjacent column in the first zone, said PUFA product beType: ApplicationFiled: September 30, 2015Publication date: January 21, 2016Inventors: Adam Kelliher, Angus Morrison, Anil Oroskar, Rakesh Vikraman Nair Rema, Abhilesh Agarwal
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Patent number: 9234157Abstract: The present invention provides a chromatographic separation process for recovering a polyunsaturated fatty acid (PUFA) product from a feed mixture, which process comprises the steps of: (i) purifying the feed mixture in a first separation step in a simulated or actual moving bed chromatography apparatus having a plurality of linked chromatography columns containing, as eluent, an aqueous organic solvent, to obtain an intermediate product; and (ii) purifying the intermediate product obtained in (i) in a second separation step using a simulated or actual moving bed chromatography apparatus having a plurality of linked chromatography columns containing, as eluent, an aqueous organic solvent, to obtain the PUFA product; wherein (a) the first and second separation steps are carried out sequentially on the same chromatography apparatus, the intermediate product being recovered between the first and second separation steps and the process conditions in the chromatography apparatus being adjusted between the first anType: GrantFiled: July 6, 2012Date of Patent: January 12, 2016Assignee: BASF Pharma Callanish LimitedInventors: Adam Kelliher, Angus Morrison, Anil Oroskar, Rakesh Vikraman Nair Rema, Abhilesh Agarwal
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Publication number: 20150166929Abstract: The present invention provides a chromatographic separation process for recovering a polyunsaturated fatty acid (PUFA) product from a feed mixture which is a fish oil or which is derived from fish oil, which process comprises the steps of: (i) purifying the feed mixture in a chromatographic separation step, to obtain a first intermediate product; and (ii) purifying the first intermediate product obtained in (i) in a simulated or actual moving bed chromatographic separation step, to obtain a second intermediate product; and (iii) purifying the second intermediate product obtained in (ii) in a simulated or actual moving bed chromatographic separation step, to obtain the PUFA product; wherein an aqueous organic solvent is used as eluent in each separation step; saturated and/or monounsaturated fatty acids present in the feed mixture are removed in the first separation step; the PUFA product is separated from different components of the feed mixture in steps (ii) and (iii); and the PUFA product obtained in the thType: ApplicationFiled: July 6, 2012Publication date: June 18, 2015Applicant: BASF Pharma (Callanish)LimitedInventors: Adam Kelliher, Angus Morrison, Anil Oroskar, Rakesh Vikraman Nair Rema, Abhilesh Agarwal
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Publication number: 20150129501Abstract: A flash chromatography apparatus which provides an improved apparatus for large and medium commercial scale flash chromatography columns. More particularly, the invention relates to a flash chromatography column and cartridge system for positioning and ease of loading and unloading of stationary phase agent in the flash chromatography column. The flash chromatography column further provides flow distributors to support the stationary phase and permit plug flow through the column. The apparatus of the present is modular and can be disposed in any configuration to reduce maintenance cost and downtime in a commercial installation. Flash chromatography is widely used for purification of low molecular weight organic compounds and products of organic synthetic reactions.Type: ApplicationFiled: November 12, 2013Publication date: May 14, 2015Applicant: Orochem Technologies, Inc.Inventors: Anil R. Oroskar, Asha A. Oroskar, Ved Bhushan Gulati, Rakesh Vikraman Nair Rema
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Patent number: 8802843Abstract: Disclosed is a process for the production of d-tagatose from lactose after acid hydrolysis to provide a hydrolysate having 1 equiv of d-glucose and 1 equiv of d-galactose for each unit of lactose converted. More particularly, the invention relates to a process for the isomerization of d-galactose to d-tagatose and the use of a simplified separation scheme based on simulated moving bed (SMB) separation. The isomerization of d-galactose to d-tagatose is carried out in the presence of calcium oxide or calcium hydroxide. The process is useful for providing a simplified processing route to providing pure d-tagatose and glucose as two products from lactose hydrolysate. In an alternate embodiment, a process is disclosed for the production of d-tagatose from fermented lactose hydrolysate to provide a crystallized d-tagatose product. D-tagatose is useful as a food additive, as a sweetener, as a texturizer, as a stabilizer, or as a humectant.Type: GrantFiled: May 22, 2012Date of Patent: August 12, 2014Assignee: OROCHEM Technologies, Inc.Inventors: Anil R. Oroskar, Omkar M. Kulkarni, David W. House, Deepak Sharma, Rakesh Vikraman Nair Rema
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Publication number: 20140200360Abstract: The present invention provides a chromatographic separation process for recovering a polyunsaturated fatty acid (PUFA) product from a feed mixture, which process comprises the steps of: (i) purifying the feed mixture in a first separation step in a simulated or actual moving bed chromatography apparatus having a plurality of linked chromatography columns containing, as eluent, an aqueous organic solvent, to obtain an intermediate product; and (ii) purifying the intermediate product obtained in (i) in a second separation step using a simulated or actual moving bed chromatography apparatus having a plurality of linked chromatography columns containing, as eluent, an aqueous organic solvent, to obtain the PUFA product; wherein (a) the first and second separation steps are carried out sequentially on the same chromatography apparatus, the intermediate product being recovered between the first and second separation steps and the process conditions in the chromatography apparatus being adjusted between the first anType: ApplicationFiled: July 6, 2012Publication date: July 17, 2014Applicant: BASF Pharma (Callanish) LimitedInventors: Adam Kelliher, Angus Morrison, Anil Oroskar, Rakesh Vikraman Nair Rema, Abhilesh Agarwal
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Publication number: 20140194636Abstract: The present invention provides a chromatographic separation process for recovering a polyunsaturated fatty acid (PUFA) product, from a feed mixture, which process comprises introducing the feed mixture to a simulated or actual moving bed chromatography apparatus having a plurality of linked chromatography columns containing, as eluent, an aqueous organic solvent, wherein the apparatus has a plurality of zones comprising at least a first zone and second zone, each zone having an extract stream and a raffinate stream from which liquid can be collected from said plurality of linked chromatography columns, and wherein (a) a raffinate stream containing the PUFA product together with more polar components is collected from a column in the first zone and introduced to a nonadjacent column in the second zone, and/or (b) an extract stream containing the PUFA product together with less polar components is collected from a column in the second zone and introduced to a nonadjacent column in the first zone, said PUFA prodType: ApplicationFiled: July 6, 2012Publication date: July 10, 2014Applicant: BASF Pharma (Callanish) LimitedInventors: Adam Kelliher, Angus Morrison, Anil Oroskar, Rakesh Vikraman Nair Rema, Abhilesh Agarwal
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Publication number: 20140128627Abstract: The present invention provides a chromatographic separation process for recovering a polyunsaturated fatty acid (PUFA) product from a feed mixture, which process comprises the steps of: (i) purifying the feed mixture in a first separation step in a simulated or actual moving bed chromatography apparatus having a plurality of linked chromatography columns containing, as eluent, an aqueous organic solvent, to obtain an intermediate product; and (ii) purifying the intermediate product obtained in (i) in a second separation step using a simulated or actual moving bed chromatography apparatus having a plurality of linked chromatography columns containing, as eluent, an aqueous organic solvent, to obtain the PUFA product; wherein (a) the first and second separation steps are carried out sequentially on the same chromatography apparatus, the intermediate product being recovered between the first and second separation steps and the process conditions in the chromatography apparatus being adjusted between the first anType: ApplicationFiled: July 6, 2012Publication date: May 8, 2014Applicant: BASF Pharma (Callanish ) LimitedInventors: Adam Kelliher, Angus Morrison, Anil Oroskar, Rakesh Vikraman Nair Rema, Abhilesh Agarwal