Patents by Inventor Ravi Kanjolia

Ravi Kanjolia 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).

  • Publication number: 20130041170
    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: Application
    Filed: August 8, 2012
    Publication date: February 14, 2013
    Applicant: Sigma-Aldrich Co. LLC
    Inventors: Rajesh Odedra, Neil Boag, Jeff Anthis, Ravi Kanjolia, Mark Saly
  • Publication number: 20120266967
    Abstract: A solid precursor delivery assembly generally includes a container having upper and lower portions and chambers defined within the container, including an inlet chamber, an outlet chamber, and first and second precursor chambers. The first and second precursor chambers are configured for holding precursor material within the container. Sintered frits are fixedly coupled and sealed to an interior portion of the container, and define at least part of the chambers within the container. At least one of the sintered frits is configured for retaining precursor material thereon within the first precursor chamber, and at least one of the sintered frits is configured for retaining precursor material thereon within the second precursor chamber. An inlet is coupled to the container for delivering carrier gas into the container, and an outlet is coupled to the container for use in removing vaporized precursor material and carrier gas from the container.
    Type: Application
    Filed: October 21, 2010
    Publication date: October 25, 2012
    Applicant: SIGMA-ALDRICH CO. LLC
    Inventors: Ravi Kanjolia, Chris Platts, Nam Nguyen, Mark Wilkinson
  • Patent number: 8272626
    Abstract: A bubbler (2) for delivering liquid or solid metalorganic compounds to a reactor site. The bubbler has an inner and outer chamber and has a member (14) positioned between its inlet (6) and outlet (8) that is provided with a plurality of apertures therein. The member (14) is preferably in the form of a perforated disc having a predefined density of apertures therein to provide optimum pick up and flow of carrier gas through the bubbler.
    Type: Grant
    Filed: October 12, 2006
    Date of Patent: September 25, 2012
    Assignee: Sigma-Aldrich Co. LLC
    Inventors: Hugh Cunning, Graham Williams, Rajesh Odedra, Ravi Kanjolia
  • Publication number: 20120177845
    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: Application
    Filed: July 27, 2010
    Publication date: July 12, 2012
    Applicant: Sigma-Aldrich Co. LLC
    Inventors: Rajesh Odedra, Neil Boag, Jeff Anthis, Ravi Kanjolia
  • Publication number: 20110165780
    Abstract: A method of forming ruthenium-containing films by atomic layer deposition is provided. The method comprises delivering at least one precursor to a substrate, the at least one precursor corresponding in structure to Formula I: (L)Ru(CO)3 wherein L is selected from the group consisting of a linear or branched C2-C6-alkenyl and a linear or branched C1-6-alkyl; and wherein L is optionally substituted with one or more substituents independently selected from the group consisting of C2-C6-alkenyl, C1-6-alkyl, alkoxy and NR1R2; wherein R1 and R2 are independently alkyl or hydrogen.
    Type: Application
    Filed: May 29, 2009
    Publication date: July 7, 2011
    Applicant: Sigma-Aldrich Co.
    Inventors: Ravi Kanjolia, Rajesh Odedra, Jeff Anthis, Neil Boag
  • Publication number: 20100261350
    Abstract: Methods of forming thin metal-containing films by chemical phase deposition, particularly atomic layer deposition (ALD) and chemical vapor deposition (CVD), are provided. The methods comprise delivering at least one organometallic precursor to a substrate, wherein the at least one precursor corresponds in structure to Formula (II); wherein: M is Ru, Fe or Os; R is Q-C10-alkyl; X is C1-C10-alkyl; and n is zero, 1, 2, 3, 4 or 5. Further provided are methods of making precursors disclosed herein.
    Type: Application
    Filed: July 24, 2008
    Publication date: October 14, 2010
    Applicant: SIGMA-ALDRICH CO.
    Inventors: Ravi Kanjolia, Rajesh Odedra, Neil Boag, David Weyburne
  • Publication number: 20100256406
    Abstract: An organometallic precursor is provided. The precursor corresponds in structure to Formula (I): Cp(R)nM(CO)2(X), wherein: M is Ru, Fe or Os; R is C1-C10-alkyl; X is C1-C10-alkyl; and n is 1, 2, 3, 4 or 5. The precursors are useful in chemical phase deposition processes, such as atomic layer deposition (ALD) and chemical vapor deposition (CVD).
    Type: Application
    Filed: July 24, 2008
    Publication date: October 7, 2010
    Applicant: SIGMA-ALDRICH CO.
    Inventors: Ravi Kanjolia, Rajesh Odedra, Neil Boag
  • Publication number: 20080251016
    Abstract: A bubbler (2) for delivering liquid or solid metalorganic compounds to a reactor site. The bubbler has an inner and outer chamber and has a member (14) positioned between its inlet (6) and outlet (8) that is provided with a plurality of apertures therein. The member (14) is preferably in the form of a perforated disc having a predefined density of apertures therein to provide optimum pick up and flow of carrier gas through the bubbler.
    Type: Application
    Filed: October 12, 2006
    Publication date: October 16, 2008
    Inventors: Hugh Cunning, Graham Williams, Rajesh Odedra, Ravi Kanjolia
  • Publication number: 20020102847
    Abstract: TBHy is demonstrated as an efficient and a less carbon-containing N precursor for the growth of high-quality InGaAsN by MOCVD at lower growth temperatures. The photovoltaic characteristics of 1.20 eV InGaAsN solar cells, such as open-circuit voltage, short-circuit current, fill factor and efficiency are improved significantly by using TBHy compared to using DMHy. This demonstration can also be applied to other InGaAsN-based optoelectronic and electronic devices. Therefore, this invention is extremely important to expedite the demonstration of next-generation prototype products such as 1.3 &mgr;m-InGaAsN-epitaxial VCSELs for high-speed optical communications, low-power Npn InGaP/InGaAsN/GaAs HBTs and InGaP/AlGaAs/InGaAsN HEMTs for wireless applications, and high-efficiency multiple-junction InGaP/GaAs/InGaAsN/Ge solar cells for space power systems.
    Type: Application
    Filed: September 17, 2001
    Publication date: August 1, 2002
    Inventors: Paul R. Sharps, Hong Qi Hou, Nein-Yi Li, Ravi Kanjolia
  • Patent number: 5603988
    Abstract: Titanium and/or tantalum nitrides or nitride silicides are deposited onto a substrate by chemical vapor deposition of a titanium and/or tantalum silylamido complex.
    Type: Grant
    Filed: June 2, 1995
    Date of Patent: February 18, 1997
    Assignees: Morton International, Inc., International Business Machines Corporation
    Inventors: Michael Shapiro, Ravi Kanjolia, Ben C. Hui, Paul F. Seidler, Karen Holloway, Richard Conti, Jonathan Chapple-Sokol