Patents by Inventor Mehul Thathagar
Mehul Thathagar 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: 10118149Abstract: The present invention relates to an apparatus comprising a) an unbaffled reactor or microreactor having a channel defined by a pathway, and b) an oscillating flow device, wherein the channel pathway comprises a plurality of directional changes. The reactor channel has a hydrolic diameter from 0.1 mm to 10 mm. A method of making said apparatus and the use of said apparatus to carry out a process on a suspension is also disclosed.Type: GrantFiled: January 13, 2011Date of Patent: November 6, 2018Assignee: Patheon Austria GmbH & Co KGInventors: Rafael Wilhelmus Elisabeth Ghislain Reintjens, Mehul Thathagar
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Patent number: 9550797Abstract: The present invention relates to a process of preparing a Grignard reagent comprising reacting magnesium particulates in a fluid bed reactor. The present invention further relates to a continuous process comprising fluidizing magnesium particulates in a reactor, forming the Grignard reagent continuously, and reacting the Grignard reagent with a substrate.Type: GrantFiled: June 27, 2014Date of Patent: January 24, 2017Assignee: Patheon Holdings I B.V.Inventors: Mehul Thathagar, Peter Poechlauer, Rafael Wilhelmus Elisabeth Ghislain Reintjens, Michel Goldbach
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Publication number: 20160137669Abstract: The present invention relates to a process of preparing a Grignard reagent comprising reacting magnesium particulates in a fluid bed reactor. The present invention further relates to a continuous process comprising fluidizing magnesium particulates in a reactor, forming the Grignard reagent continuously, and reacting the Grignard reagent with a substrate.Type: ApplicationFiled: June 27, 2014Publication date: May 19, 2016Inventors: Mehul Thathagar, Peter Poechlauer, Rafael Wilhelmus Elisabeth Ghislain Reintjens, Michel Goldbach
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Patent number: 9249088Abstract: A process for producing a reaction product of a diazo compound, which process comprises: a. continuously supplying to a first reactor a precursor of a diazo compound; a water-miscible solvent; a base and water; b. mixing the precursor of a diazo compound; the water-miscible solvent; the base and water to generate a diazo compound; c. continuously removing from the first reactor, through a hydrophobic membrane, into a second reactor the formed diazo compound; d. continuously removing from the first reactor all reaction products that have not passed into the second reactor; e. continuously supplying to the second reactor a substrate in a non-water-miscible solvent; f. mixing the above components to generate a reaction product of a diazo compound; and g. continuously removing from the second reactor the non-water-miscible solvent and the reaction product of the diazo compound, and apparatus suitable for carrying out such a process.Type: GrantFiled: November 1, 2011Date of Patent: February 2, 2016Assignee: DPx Holdings B.V.Inventors: Peter Poechlauer, Rafael Wilhelmus Elisabeth Ghislain Reintjens, Hubertus Johannes Adrianus Dielemans, Mehul Thathagar, Jeroen Hubertina Gerardus Konings
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Publication number: 20140100360Abstract: A process for producing a reaction product of a diazo compound, which process comprises: a. continuously supplying to a first reactor a precursor of a diazo compound; a water-miscible solvent; a base and water; b. mixing the precursor of a diazo compound; the water-miscible solvent; the base and water to generate a diazo compound; c. continuously removing from the first reactor, through a hydrophobic membrane, into a second reactor the formed diazo compound; d. continuously removing from the first reactor all reaction products that have not passed into the second reactor; e. continuously supplying to the second reactor a substrate in a non-water-miscible solvent; f. mixing the above components to generate a reaction product of a diazo compound; and g. continuously removing from the second reactor the non-water-miscible solvent and the reaction product of the diazo compound, and apparatus suitable for carrying out such a process.Type: ApplicationFiled: November 1, 2011Publication date: April 10, 2014Applicants: DSM FINE CHEMICALS AUSTRIA NFG. GMBH & CO KG, DSM IP ASSETS B.V.Inventors: Peter Poechlauer, Rafael Wilhelmus Elisabeth Ghislain Reintjens, Hubertus Johannes Adrianus Dielemans, Mehul Thathagar, Jeroen Hubertina Gerardus Konings
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Publication number: 20140081038Abstract: The present invention relates to an apparatus comprising a) an unbaffled reactor or microreactor having a channel defined by a pathway, and b) an oscillating flow device, wherein the channel pathway comprises a plurality of directional changes. The reactor channel has a hydrolic diameter from 0.1 mm to 10 mm A method of making said apparatus and the use of said apparatus to carry out a process on a suspension is also disclosed.Type: ApplicationFiled: January 13, 2011Publication date: March 20, 2014Applicant: DSM IP ASSETS B.V.Inventors: Rafael Wilhelmus Elisabeth Ghislain Reintjens, Mehul Thathagar
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Patent number: 8536366Abstract: A process for the continuous production of a compound of Formula (II), HO—R1—ONO2 (II) wherein R1 is a straight chain alkyl radical having from 3 to 6 carbon atoms, in a two-phase solvent system, comprising contacting a compound of Formula (I), HO—R1—OH (I) wherein R1 is as defined above, with nitric acid in the presence of a first solvent, wherein the compound of Formula (II) is continuously extracted into a second solvent, and the reaction is carried out in a mixing microreactor which provides a power loss of at least 1.3 times the power loss provided under identical conditions by a circular cross-section straight-channel microreactor having an internal diameter equal to the average hydraulic diameter of the mixing microreactor and a length equal to the length of the mixing microreactor.Type: GrantFiled: December 19, 2008Date of Patent: September 17, 2013Assignee: DSM Fine Chemicals Austria NFG GmbH & Co KGInventors: Sascha Braune, Stefan Steinhofer, Peter Poechlauer, Rafael Wilhelmus E. G. Reintjens, Nicole Theodora W. Linssen, Mehul Thathagar
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Patent number: 8497384Abstract: A process for the preparation of a cyclopropane derivative of Formula (I), by reacting an olefin of Formula (II), with a carbene of the formula:CR1R2, in a reaction vessel, optionally in the presence of a solvent, wherein, R1 and R2 are each independently hydrogen, C1-C6 alkyl, C2-C6 alkenyl, aryl, heteroaryl, heterocyclyl, carbocyclyl, heterocyclyl, —C(O)R7 or —NR82; R3, R4, R5 and R6 are each independently hydrogen, C1-C6 alkyl, C1-C6 alkoxy, C2-C6 alkenyl, aryl, aryloxy, heteroaryl, heterocyclyl, carbocyclyl, heterocyclyl, —C(O)R9, —NR102, —SR11, —S(O)R11, or —SO2R11, or R3 and R6 are as defined above and R4 and R5 together form a ring, which ring is carbocyclyl, heterocyclyl, aromatic or heteroaromatic; R7 is hydrogen, hydroxy, C1-C6 alkyl, C1-C6 alkoxy, aryl, aryloxy, heteroaryl or —NR102; R8 is hydrogen, C1-C6 alkyl, C1-C6 alkenyl, aryl, heteroaryl, carbocyclyl or heterocyclyl; R9 is hydrogen, hydroxy, C1-C6 alkyl, C1-C6 alkoxy, aryl, aryloxy or heteroaryl; R10 is hydrogen, C1-C6 alkyl, C2-C6 alkenyl, aType: GrantFiled: November 12, 2009Date of Patent: July 30, 2013Assignee: DSM Fine Chemicals Austria NFG GmbH & Co KGInventors: Mehul Thathagar, Peter Poechlauer, Sascha Braune
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Publication number: 20110301359Abstract: A process for the preparation of a cyclopropane derivative of Formula (I), by reacting an olefin of Formula (II), with a carbene of the formula: CR1R2, in a reaction vessel, optionally in the presence of a solvent, wherein, R1 and R2 are each independently hydrogen, C1-C6 alkyl, C2-C6 alkenyl, aryl, heteroaryl, heterocyclyl, carbocyclyl, heterocyclyl, —C(O)R7 or —NR82; R3, R4, R5 and R6 are each independently hydrogen, C1-C6 alkyl, C1-C6 alkoxy, C2-C6 alkenyl, aryl, aryloxy, heteroaryl, heterocyclyl, carbocyclyl, heterocyclyl, —C(O)R9, —NR102, —SR11, —S(O)R11, or —SO2R11, or R3 and R6 are as defined above and R4 and R5 together form a ring, which ring is carbocyclyl, heterocyclyl, aromatic or heteroaromatic; R7 is hydrogen, hydroxy, C1-C6 alkyl, C1-C6 alkoxy, aryl, aryloxy, heteroaryl or —NR102; R8 is hydrogen, C1-C6 alkyl, C1-C6 alkenyl, aryl, heteroaryl, carbocyclyl or heterocyclyl; R9 is hydrogen, hydroxy, C1-C6 alkyl, C1-C6 alkoxy, aryl, aryloxy or heteroaryl; R10 is hydrogen, C1-C6 alkyl, C2-C6 alkenyl,Type: ApplicationFiled: November 12, 2009Publication date: December 8, 2011Inventors: Mehul Thathagar, Peter Poechlauer, Sascha Braune
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Publication number: 20110034720Abstract: A process for the continuous production of a compound of Formula (II), HO—R1—ONO2 (II) wherein R1 is a straight chain alkyl radical having from 3 to 6 carbon atoms, in a two-phase solvent system, comprising contacting a compound of Formula (I), HO—R1—OH (I) wherein R1 is as defined above, with nitric acid in the presence of a first solvent, wherein the compound of Formula (II) is continuously extracted into a second solvent, and the reaction is carried out in a mixing microreactor which provides a power loss of at least 1.3 times the power loss provided under identical conditions by a circular cross-section straight-channel microreactor having an internal diameter equal to the average hydraulic diameter of the mixing microreactor and a length equal to the length of the mixing microreactor.Type: ApplicationFiled: December 19, 2008Publication date: February 10, 2011Inventors: Sascha Braune, Stefan Steinhofer, Peter Poechlauer, Rafael Wilhelmus E.G. Reintjens, Nicole Theodora W. Linssen, Mehul Thathagar