Patents by Inventor Rajesh Odedra
Rajesh Odedra 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: 11802134Abstract: A class of organometallic compounds is provided. The compounds correspond in structure to Formula 1 (A)x-M-(OR3)4-x wherein: A is selected from the group consisting of —NR1R2, —N(R4)(CH2)nN(R5R6), —N?C(NR4R5)(NR6R7), OCOR1, halo and Y; R1 and R2 are independently selected from the group consisting of H and a cyclic or acyclic alkyl group having from 1 to 8 carbon atoms, with the proviso that at least one of R1 and R2 must be other than H; R4, R5, R6 and R7 are independently selected from the group consisting of H and an acyclic alkyl group having from 1 to 4 carbon atoms; Y is selected from the group consisting of a 3- to 13-membered heterocyclic radical containing at least one nitrogen atom; R3 is a cyclic or acyclic alkyl group having from 1 to 6 carbon atoms; M is selected from the group consisting of Si, Ge, Sn, Ti, Zr and Hf; x is an integer from 1 to 3; and n is an integer from 1 to 4.Type: GrantFiled: February 10, 2017Date of Patent: October 31, 2023Assignee: SEASTAR CHEMICALS ULCInventors: Rajesh Odedra, Cunhai Dong, Shaun Cembella
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Patent number: 11643422Abstract: Disclosed herein are methods of purifying compounds useful for the deposition of high purity tin oxide and high purity compounds purified by those methods. Such compounds are those of the Formula as follows Rx—Sn-A4-x, wherein: A is selected from the group consisting of (YaR?z) and a 3- to 7-membered N-containing heterocyclic group; each R group is independently selected from the group consisting of an alkyl or aryl group having from 1 to 10 carbon atoms; each R? group is independently selected from the group consisting of an alkyl, acyl or aryl group having from 1 to 10 carbon atoms; x is an integer from 0 to 4; a is an integer from 0 to 1; Y is selected from the group consisting of N, O, S, and P; and z is 1 when Y is O, S or when Y is absent and z is 2 when Y is N or P.Type: GrantFiled: March 30, 2020Date of Patent: May 9, 2023Assignee: SEASTAR CHEMICALS ULCInventors: Rajesh Odedra, Cunhai Dong, Diana Fabulyak, Wesley Graff
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Patent number: 11498938Abstract: A method for forming a metal-containing film includes: a) providing at least one substrate; b) delivering to said substrate at least one compound of Formula 1 in the gaseous phase, (R1R2R3 (Si))—Co(CO)4 (Formula 1), wherein R1, R2 and R3 are independently selected lower alkyl groups; and c) simultaneously with or subsequently to step b), delivering to said substrate a co-reagent in the gaseous phase, the co-reagent being lower alcohol. Further, a method of selectively depositing a metal-containing film includes: a) providing at least two substrates comprising different materials, one of said at least two substrates has an affinity for Si and another of said at least two substrates has an affinity for CO; b) delivering to said substrates at least one compound of the Formula 1 in the gaseous phase; and c) simultaneously with or subsequently to step b), delivering to said at least two substrates at least one co-reagent in the gaseous phase.Type: GrantFiled: September 2, 2020Date of Patent: November 15, 2022Assignee: SEASTAR CHEMICALS ULCInventors: Rajesh Odedra, Cunhai Dong, Shaun Cembella
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Publication number: 20220306657Abstract: Specific organometallic compounds of Formula I: Qx-Sn-(A1R1?z)4-x or Formula II: Sn(NR2(CH2)nA2)2 useful for the deposition of high purity tin oxide, as well as methods of using such compounds are disclosed. Also disclosed are compositions of organometallic compounds useful for the deposition of high purity tin oxide that in combination improve stability. Also disclosed are processes for dry etching tin oxide with a particular etchant gas and/or a process for dry etching a substrate using a particular etchant gas with a specific additive.Type: ApplicationFiled: August 28, 2020Publication date: September 29, 2022Applicant: SEASTAR CHEMICALS ULCInventors: Diana FABULYAK, Rajesh ODEDRA, Wesley Phillip GRAFF, Shaun CEMBELLA, Cassidy CONOVER
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Publication number: 20210214379Abstract: Disclosed herein are methods of purifying compounds useful for the deposition of high purity tin oxide and high purity compounds purified by those methods. Such compounds are those of the Formula as follows Rx—Sn-A4-x wherein: A is selected from the group consisting of (YaR?z) and a 3- to 7-membered N-containing heterocyclic group; each R group is independently selected from the group consisting of an alkyl or aryl group having from 1 to 10 carbon atoms; each R? group is independently selected from the group consisting of an alkyl, acyl or aryl group having from 1 to 10 carbon atoms; x is an integer from 0 to 4; a is an integer from 0 to 1; Y is selected from the group consisting of N, O, S, and P; and z is 1 when Y is O, S or when Y is absent and z is 2 when Y is N or P.Type: ApplicationFiled: March 26, 2021Publication date: July 15, 2021Applicant: SEASTAR CHEMICALS ULCInventors: Rajesh ODEDRA, Cunhai DONG, Diana FABULYAK, Wesley GRAFF
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Publication number: 20210070783Abstract: A class of organometallic compounds is provided. The compounds correspond in structure to Formula 1 (A)x-M-(OR3)4-x wherein: A is selected from the group consisting of —NR1R2, —N(R4)(CH2)nN(R5R6), —N?C(NR4R5)(NR6R7), OCOR1, halo and Y; R1 and R2 are independently selected from the group consisting of H and a cyclic or acyclic alkyl group having from 1 to 8 carbon atoms, with the proviso that at least one of R1 and R2 must be other than H; R4, R5, R6 and R7 are independently selected from the group consisting of H and an acyclic alkyl group having from 1 to 4 carbon atoms; Y is selected from the group consisting of a 3- to 13-membered heterocyclic radical containing at least one nitrogen atom; R3 is a cyclic or acyclic alkyl group having from 1 to 6 carbon atoms; M is selected from the group consisting of Si, Ge, Sn, Ti, Zr and Hf; x is an integer from 1 to 3; and n is an integer from 1 to 4.Type: ApplicationFiled: February 10, 2017Publication date: March 11, 2021Inventors: Rajesh Odedra, Cunhai Dong, Shaun Cembella
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Publication number: 20200399300Abstract: Organometallic compounds useful in chemical phase deposition processes such as atomic layer deposition (ALD) and chemical vapor deposition (CVD).Type: ApplicationFiled: September 2, 2020Publication date: December 24, 2020Applicant: SEASTAR CHEMICALS ULCInventors: Rajesh ODEDRA, Cunhai DONG, Shaun CEMBELLA
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Publication number: 20200223877Abstract: Disclosed herein are methods of purifying compounds useful for the deposition of high purity tin oxide and high purity compounds purified by those methods. Such compounds are those of the Formula as follows Rx—Sn-A4-x, wherein: A is selected from the group consisting of (YaR?z) and a 3- to 7-membered N-containing heterocyclic group; each R group is independently selected from the group consisting of an alkyl or aryl group having from 1 to 10 carbon atoms; each R? group is independently selected from the group consisting of an alkyl, acyl or aryl group having from 1 to 10 carbon atoms; x is an integer from 0 to 4; a is an integer from 0 to 1; Y is selected from the group consisting of N, O, S, and P; and z is 1 when Y is O, S or when Y is absent and z is 2 when Y is N or P.Type: ApplicationFiled: March 30, 2020Publication date: July 16, 2020Applicant: SEASTAR CHEMICALS ULCInventors: Rajesh ODEDRA, Cunhai DONG, Diana FABULYAK, Wesley GRAFF
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Publication number: 20190337969Abstract: Disclosed herein are compounds useful for the deposition of high purity tin oxide. Also disclose are methods for the deposition of tin oxide films using such compounds. Such films demonstrate high conformality, high etch selectivity and are optically transparent. Such compounds are those of the Formula as follows Rx—Sn-A4-x wherein: A is selected from the group consisting of (YaR?z) and a 3- to 7-membered N-containing heterocyclic group; each R group is independently selected from the group consisting of an alkyl or aryl group having from 1 to 10 carbon atoms; each R? group is independently selected from the group consisting of an alkyl, acyl or aryl group having from 1 to 10 carbon atoms; x is an integer from 0 to 4; a is an integer from 0 to 1; Y is selected from the group consisting of N, O, S, and P; and z is 1 when Y is O, S or when Y is absent and z is 2 when Y is N or P.Type: ApplicationFiled: June 17, 2019Publication date: November 7, 2019Applicant: SEASTAR CHEMICALS INC.Inventors: Rajesh ODEDRA, Cunhai DONG, Diana FABULYAK, Wesley GRAFF
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Patent number: 10240230Abstract: The invention relates to the use of thionyl chloride and related materials for dry etching of internal surfaces of metalorganic vapor phase epitaxy (MOVPE) reactors to remove deposits. The method is also useful for the dry etching of process substrates within such reactors for cleaning and processing of those substrates. The invention may be particularly adaptable to chemical vapor deposition reactors used in the manufacture of high brightness LED's based on III-V semiconductors such as GaN and related materials. Features of the process include thermal, UV, and plasma activated dry cleaning, and the use of etchant gases such as COCl2, COBr2, COl2, SOl2, SOCl2, SOBr2, SO2Cl2, SO2Br2, NOCI, NOBr, NOl, S2Cl2, S2Br2, SCI2, SBr2, SOClBr, SOClF and SOFBr, either formed from neat materials or combinations of constituent gases such as CO, SO, SO2 or NO with halogens, to achieve the desired effect.Type: GrantFiled: December 18, 2012Date of Patent: March 26, 2019Assignee: SEASTAR CHEMICALS INC.Inventor: Rajesh Odedra
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Publication number: 20180155383Abstract: Organometallic compounds, useful in chemical phase deposition processes, having a structure: [{R1R2R3(A))x-M(CO)y]z, wherein R1, R2 and R3 are selected from H, a lower alkyl group and a phenyl group substituted with at least one selected lower alkyl group, where at least one of R1, R2 and R3 must be other than H; M is selected from cobalt, iron, manganese, and chromium group metals; A is selected from Si, Ge, and Sn; wherein: x=1, y=4, and z=1 when M is selected from a cobalt group metal, x=1, y=5, and z=1 when M is selected from a manganese group metal, x=2, y=4, and z=1 when M is selected from a chromium group metal, and x=2, y=4, and z=1 or, alternatively, x=1, y=4, and z=2 when M is selected from an iron group metal.Type: ApplicationFiled: April 25, 2016Publication date: June 7, 2018Inventors: Rajesh ODEDRA, Cunhai DONG, Shaun CEMBELLA
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Patent number: 9802220Abstract: Molybdenum (IV) amide complexes are disclosed herein corresponding in structure to Formula (I): wherein: L is —NR1R2; R1 and R2 are C1-C6-alkyl or hydrogen; R is C1-C6-alkyl; and n is zero, 1, 2 or 3. Further, methods of forming MoO2 films by atomic layer deposition (ALD) using Formula (I) complexes and Mo[N(Me)(Et)]4 are disclosed herein.Type: GrantFiled: August 25, 2011Date of Patent: October 31, 2017Assignee: Merck Patent GmbHInventors: Peter Nicholas Heys, Rajesh Odedra, Sarah Louise Hindley
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Patent number: 9175023Abstract: Molybdenum complexes and use thereof in thin film deposition, such as CVD and ALD are provided herein. The molybdenum complexes correspond in structure to Formula (I) and Formula (II), wherein R1, R3, R5, R7, R8 and R10 are independently and at each occurrence alkyl; R2, R6 and R9 are independently alkyl; R4 and R11 are independently and at each occurrence selected from the group consisting of alkyl, alkenyl, and alkynyl; x, z, a, c, d and f are independently zero, 1, or 2; y, b and e are independently zero or 1; and n and m are independently zero to 5.Type: GrantFiled: January 18, 2013Date of Patent: November 3, 2015Assignee: SIGMA-ALDRICH CO. LLCInventors: Rajesh Odedra, Shaun Garratt, Mark Saly, Ravi Kanjolia
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Publication number: 20150218695Abstract: The invention relates to the use of thionyl chloride and related materials for dry etching of internal surfaces of metalorganic vapour phase epitaxy (MOVPE) reactors to remove deposits. The method is also useful for the dry etching of process substrates within such reactors for cleaning and processing of those substrates. The invention may be particularly adaptable to chemical vapor deposition reactors used in the manufacture of high brightness LED's based on III-V semiconductors such as GaN and related materials. Features of the process include thermal, UV, and plasma activated dry cleaning, and the use of etchant gases such as COCl2, COBr2, COl2, SOl2, SOCl2, SOBr2, SO2Cl2, SO2Br2, NOCI, NOBr, NOl, S2Cl2, S2Br2, SCI2, SBr2, SOClBr, SOClF and SOFBr, either formed from neat materials or combinations of constituent gases such as CO, SO, SO2 or NO with halogens, to achieve the desired effect.Type: ApplicationFiled: December 18, 2012Publication date: August 6, 2015Inventor: Rajesh Odedra
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Patent number: 9028917Abstract: A method for forming a cobalt-containing thin film by a vapor deposition process is provided. The method comprises using at least one precursor corresponding in structure to Formula (I); wherein R1 and R2 are independently C2-C8-alkyl; x is zero, 1 or 2; and y is zero or 1; wherein both x and y can not be zero simultaneously.Type: GrantFiled: July 27, 2010Date of Patent: May 12, 2015Assignee: Sigma-Aldrich Co. LLCInventors: Rajesh Odedra, Neil Boag, Jeff Anthis, Ravi Kanjolia
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Alkyl-substituted allyl carbonyl metal complexes and use thereof for preparing dielectric thin films
Patent number: 8927748Abstract: Organometallic complexes and use thereof in thin film deposition, such as CVD and ALD are provided herein. The organometallic complexes are (alkyl-substituted ?3-allyl)(carbonyl)metal complexes.Type: GrantFiled: August 8, 2012Date of Patent: January 6, 2015Assignee: Sigma-Aldrich Co. LLCInventors: Rajesh Odedra, Neil Boag, Jeff Anthis, Ravi Kanjolia, Mark Saly -
Publication number: 20140370192Abstract: Molybdenum complexes and use thereof in thin film deposition, such as CVD and ALD are provided herein. The molybdenum complexes correspond in structure to Formula (I) and Formula (II), wherein R1, R3, R5, R7, R8 and R10 are independently and at each occurrence alkyl; R2, R6 and R9 are independently alkyl; R4 and R11 are independently and at each occurrence selected from the group consisting of alkyl, alkenyl, and alkynyl; x, z, a, c, d and f are independently zero, 1, or 2; y, b and e are independently zero or 1; and n and m are independently zero to 5.Type: ApplicationFiled: January 18, 2013Publication date: December 18, 2014Inventors: Rajesh Odedra, Shaun Garratt, Mark Saly, Ravi Kanjolia
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Publication number: 20140209026Abstract: An apparatus deposits a film on a substrate including a reaction chamber arranged on a substrate support. An inlet port delivers gas phase reactants to the reaction chamber. A plasma generator provides plasma to the reaction chamber. A controller is configured to flow a silicon-containing reactant from a precursor group consisting of di-tert-butyl diazidosilane, tris(dimethylamido)silylazide, and bis(tert-butylhydrazido)diethyl silane. The silicon-containing reactant is introduced in vapor phase into the reaction chamber. The controller flows a second reactant in vapor phase into the reaction chamber.Type: ApplicationFiled: April 2, 2014Publication date: July 31, 2014Applicant: Novellus Systems, Inc.Inventors: Adrien LaVoie, Mark J. Saly, Daniel Moser, Rajesh Odedra, Ravi Konjolia
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Patent number: 8728955Abstract: A method of depositing a film on a substrate surface includes providing a substrate in a reaction chamber; selecting a silicon-containing reactant from a precursor group consisting of di-tert-butyl diazidosilane, bis(ethylmethylamido)silane, bis(diisopropylamino)silane, bis(tert-butylhydrazido)diethylsilane, tris(dimethylamido)silylazide, tris(dimethylamido)silylamide, ethylsilicon triazide, diisopropylaminosilane, and hexakis(dimethylamido)disilazane; introducing the silicon-containing reactant in vapor phase into the reaction chamber under conditions allowing the silicon-containing reactant to adsorb onto the substrate surface; introducing a second reactant in vapor phase into the reaction chamber while the silicon-containing reactant is adsorbed on the substrate surface, and wherein the second reactant is introduced without first sweeping the silicon-containing reactant out of the reaction chamber; and exposing the substrate surface to plasma to drive a reaction between the silicon-containing reactant andType: GrantFiled: March 1, 2012Date of Patent: May 20, 2014Assignee: Novellus Systems, Inc.Inventors: Adrien LaVoie, Mark J. Saly, Daniel Moser, Rajesh Odedra, Ravi Konjolia
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Patent number: RE45124Abstract: Methods of forming titanium-containing films by atomic layer deposition are provided. The methods comprise delivering at least one precursor to a substrate, wherein the at least one precursor corresponds in structure to Formula I: wherein: R is C1-C6-alkyl; n is zero, 1, 2, 3, 4 or 5; L is C1-C6-alkoxy or amino, wherein the amino is optionally independently substituted 1 or 2 times with C1-C6-alkyl.Type: GrantFiled: March 15, 2013Date of Patent: September 9, 2014Assignee: Sigma-Aldrich Co. LLCInventors: Peter Nicholas Heys, Andrew Kingsley, Fuquan Song, Paul Williams, Thomas Leese, Hywel Owen Davies, Rajesh Odedra