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).

  • Patent number: 11802134
    Abstract: 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: Grant
    Filed: February 10, 2017
    Date of Patent: October 31, 2023
    Assignee: SEASTAR CHEMICALS ULC
    Inventors: Rajesh Odedra, Cunhai Dong, Shaun Cembella
  • Patent number: 11643422
    Abstract: 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: Grant
    Filed: March 30, 2020
    Date of Patent: May 9, 2023
    Assignee: SEASTAR CHEMICALS ULC
    Inventors: Rajesh Odedra, Cunhai Dong, Diana Fabulyak, Wesley Graff
  • Patent number: 11498938
    Abstract: 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: Grant
    Filed: September 2, 2020
    Date of Patent: November 15, 2022
    Assignee: SEASTAR CHEMICALS ULC
    Inventors: Rajesh Odedra, Cunhai Dong, Shaun Cembella
  • Publication number: 20220306657
    Abstract: 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: Application
    Filed: August 28, 2020
    Publication date: September 29, 2022
    Applicant: SEASTAR CHEMICALS ULC
    Inventors: Diana FABULYAK, Rajesh ODEDRA, Wesley Phillip GRAFF, Shaun CEMBELLA, Cassidy CONOVER
  • Publication number: 20210214379
    Abstract: 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: Application
    Filed: March 26, 2021
    Publication date: July 15, 2021
    Applicant: SEASTAR CHEMICALS ULC
    Inventors: Rajesh ODEDRA, Cunhai DONG, Diana FABULYAK, Wesley GRAFF
  • Publication number: 20210070783
    Abstract: 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: Application
    Filed: February 10, 2017
    Publication date: March 11, 2021
    Inventors: Rajesh Odedra, Cunhai Dong, Shaun Cembella
  • Publication number: 20200399300
    Abstract: Organometallic compounds useful in chemical phase deposition processes such as atomic layer deposition (ALD) and chemical vapor deposition (CVD).
    Type: Application
    Filed: September 2, 2020
    Publication date: December 24, 2020
    Applicant: SEASTAR CHEMICALS ULC
    Inventors: Rajesh ODEDRA, Cunhai DONG, Shaun CEMBELLA
  • Publication number: 20200223877
    Abstract: 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: Application
    Filed: March 30, 2020
    Publication date: July 16, 2020
    Applicant: SEASTAR CHEMICALS ULC
    Inventors: Rajesh ODEDRA, Cunhai DONG, Diana FABULYAK, Wesley GRAFF
  • Publication number: 20190337969
    Abstract: 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: Application
    Filed: June 17, 2019
    Publication date: November 7, 2019
    Applicant: SEASTAR CHEMICALS INC.
    Inventors: Rajesh ODEDRA, Cunhai DONG, Diana FABULYAK, Wesley GRAFF
  • Patent number: 10240230
    Abstract: 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: Grant
    Filed: December 18, 2012
    Date of Patent: March 26, 2019
    Assignee: SEASTAR CHEMICALS INC.
    Inventor: Rajesh Odedra
  • Publication number: 20180155383
    Abstract: 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: Application
    Filed: April 25, 2016
    Publication date: June 7, 2018
    Inventors: Rajesh ODEDRA, Cunhai DONG, Shaun CEMBELLA
  • Patent number: 9802220
    Abstract: 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: Grant
    Filed: August 25, 2011
    Date of Patent: October 31, 2017
    Assignee: Merck Patent GmbH
    Inventors: Peter Nicholas Heys, Rajesh Odedra, Sarah Louise Hindley
  • Patent number: 9175023
    Abstract: 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: Grant
    Filed: January 18, 2013
    Date of Patent: November 3, 2015
    Assignee: SIGMA-ALDRICH CO. LLC
    Inventors: Rajesh Odedra, Shaun Garratt, Mark Saly, Ravi Kanjolia
  • Publication number: 20150218695
    Abstract: 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: Application
    Filed: December 18, 2012
    Publication date: August 6, 2015
    Inventor: Rajesh Odedra
  • Patent number: 9028917
    Abstract: 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: Grant
    Filed: July 27, 2010
    Date of Patent: May 12, 2015
    Assignee: Sigma-Aldrich Co. LLC
    Inventors: Rajesh Odedra, Neil Boag, Jeff Anthis, Ravi Kanjolia
  • Patent number: 8927748
    Abstract: 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: Grant
    Filed: August 8, 2012
    Date of Patent: January 6, 2015
    Assignee: Sigma-Aldrich Co. LLC
    Inventors: Rajesh Odedra, Neil Boag, Jeff Anthis, Ravi Kanjolia, Mark Saly
  • Publication number: 20140370192
    Abstract: 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: Application
    Filed: January 18, 2013
    Publication date: December 18, 2014
    Inventors: Rajesh Odedra, Shaun Garratt, Mark Saly, Ravi Kanjolia
  • Publication number: 20140209026
    Abstract: 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: Application
    Filed: April 2, 2014
    Publication date: July 31, 2014
    Applicant: Novellus Systems, Inc.
    Inventors: Adrien LaVoie, Mark J. Saly, Daniel Moser, Rajesh Odedra, Ravi Konjolia
  • Patent number: 8728955
    Abstract: 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 and
    Type: Grant
    Filed: March 1, 2012
    Date of Patent: May 20, 2014
    Assignee: Novellus Systems, Inc.
    Inventors: Adrien LaVoie, Mark J. Saly, Daniel Moser, Rajesh Odedra, Ravi Konjolia
  • Patent number: RE45124
    Abstract: 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: Grant
    Filed: March 15, 2013
    Date of Patent: September 9, 2014
    Assignee: Sigma-Aldrich Co. LLC
    Inventors: Peter Nicholas Heys, Andrew Kingsley, Fuquan Song, Paul Williams, Thomas Leese, Hywel Owen Davies, Rajesh Odedra