Patents by Inventor Venkat Subramaniam Venkataramani
Venkat Subramaniam Venkataramani 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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Publication number: 20220161202Abstract: Disclosed herein is a porous membrane comprising a porous substrate; a porous ceramic coating disposed on the porous substrate; where an average pore size of pores in the porous substrate are larger than an average pore size of pores in the porous coating. Disclosed herein is a method of manufacturing a porous membrane comprising disposing upon a porous substrate a porous ceramic coating, where the porous ceramic coating has an average pore size that is less than an average pore size of the porous substrate.Type: ApplicationFiled: November 23, 2021Publication date: May 26, 2022Inventors: Piyush Kar, Venkat Subramaniam Venkataramani, Aravind Mohanram
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Patent number: 11181002Abstract: A turbine system including a sealing component is presented. The sealing component is positioned in a gap between adjacent turbine components of the turbine system. The sealing component includes a metallic shim including a high-temperature-resistant alloy in a single crystal form. A turbine shroud assembly including the sealing component is also presented.Type: GrantFiled: September 29, 2016Date of Patent: November 23, 2021Assignee: General Electric CompanyInventors: Neelesh Nandkumar Sarawate, Venkat Subramaniam Venkataramani, Anthony Christopher Marin, Stephen Francis Bancheri, Larry Steven Rosenzweig, Edip Sevincer
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Publication number: 20200165713Abstract: Various embodiments include a gas turbine seal and methods of forming such seal. The method of forming the seal includes forming a freestanding ceramic seal for sealing in a gas turbine by applying a ceramic material on a substrate to form a ceramic layer, removing the substrate from the ceramic layer and finishing the ceramic layer to define the freestanding ceramic seal. The method includes depositing particles of the ceramic material in one of a molten or vapor state on a surface of the substrate and quenching the ceramic material to form the ceramic layer. The ceramic material comprises yttria-stabilized zirconia having a t? tetragonal structure. A gas turbine including the freestanding ceramic seal is additionally disclosed.Type: ApplicationFiled: July 18, 2017Publication date: May 28, 2020Inventors: Venkat Subramaniam VENKATARAMANI, Anthony Christopher MARIN, Neelesh Nandkumar SARAWATE, Stephen Francis BANCHERI, Larry Steven ROSENZWEIG
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Patent number: 10646894Abstract: The present invention is directed to a squeegee apparatus which includes a main housing including an inlet end and an outlet end, the outlet end including an extrusion face and a protruding lip member, the inlet end including an inlet opening and the extrusion face including at least one outlet opening, wherein the inlet opening and the at least one outlet opening are in fluid communication with each other within the main housing. The present invention is also directed to a method for repairing a thermal barrier coating with a squeegee apparatus including supplying a repair composition into the inlet opening of the squeegee apparatus and depositing the repair composition from the at least one outlet opening onto the damaged region and concurrently traversing the squeegee apparatus over the damaged region while contacting a thermal barrier coating adjacent to the damaged region with the lip member.Type: GrantFiled: June 30, 2016Date of Patent: May 12, 2020Assignee: GENERAL ELECTRIC COMPANYInventors: Pei-Hsin Kuo, Weston Blaine Griffin, Venkat Subramaniam Venkataramani, Hrishikesh Keshavan
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Patent number: 10100656Abstract: A coated seal slot system for turbomachinery includes a first turbine component comprising a first groove having at least one first coating attached to at least a portion of the first groove of the first turbine component, a second turbine component comprising a second groove having at least one second coating attached to at least a portion of the second groove of the second turbine component. The first and the second turbine components are disposable adjacent to each other with the first groove having the first coating and the second groove having the second coating together forming a coated seal slot extending across a gap between the first turbine component and the second turbine component. A seal is disposable in the coated seal slot and extendable across the gap between the first and the second turbine components and engageable with the first coating and the second coating to inhibit leakage of gas through the gap.Type: GrantFiled: August 25, 2015Date of Patent: October 16, 2018Assignee: GENERAL ELECTRIC COMPANYInventors: Stephen Francis Bancheri, Venkat Subramaniam Venkataramani, Glen Harold Kirby, Neelesh Nandkumar Sarawate, Nicholas Edward Antolino, Edip Sevincer, Anthony Christopher Marin
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SYSTEM AND METHOD OF EXTRACTING HYDROCARBONS FROM A WELLBORE FORMED IN A SUBTERRANEAN ROCK FORMATION
Publication number: 20180266228Abstract: A method of extracting hydrocarbons from a wellbore formed in a subterranean rock formation. The wellbore includes at least one fracture extending therefrom. The method includes forming a particle-free treatment fluid that includes an uncured, particle-free proppant material, and injecting the particle-free treatment fluid into the wellbore and towards the at least one fracture. The uncured, particle-free proppant material is configured to cure in-situ when positioned within the at least one fracture.Type: ApplicationFiled: March 14, 2018Publication date: September 20, 2018Inventors: Andrew Jacob Gorton, Mark H. Holtz, Bill James Johnson, Venkat Subramaniam Venkataramani, John Thomas Leman, Peter John Bonitatibus, JR., Davide Simone -
Patent number: 9964455Abstract: A method of monitoring a surface temperature of a hot gas path component includes directing an excitation beam having an excitation wavelength at a layer of a sensor material composition deposited on a hot gas path component to induce a fluorescent radiation. The method includes measuring fluorescent radiation emitted by the sensor material composition. The fluorescent radiation includes at least a first intensity at a first wavelength and a second intensity at a second wavelength. The surface temperature of the hot gas path component is determined based on a ratio of the first intensity at the first wavelength and the second intensity at the second wavelength of the fluorescent radiation emitted by the sensor material composition.Type: GrantFiled: October 2, 2014Date of Patent: May 8, 2018Assignee: General Electric CompanyInventors: Mark Allen Cheverton, Anant Achyut Setlur, Victor Petrovich Ostroverkhov, Guanghua Wang, James Anthony Brewer, Venkat Subramaniam Venkataramani
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Publication number: 20180087394Abstract: A turbine system including a sealing component is presented. The sealing component is positioned in a gap between adjacent turbine components of the turbine system. The sealing component includes a metallic shim including a high-temperature-resistant alloy in a single crystal form. A turbine shroud assembly including the sealing component is also presented.Type: ApplicationFiled: September 29, 2016Publication date: March 29, 2018Inventors: Neelesh Nandkumar Sarawate, Venkat Subramaniam Venkataramani, Anthony Christopher Marin, Stephen Francis Bancheri, Larry Steven Rosenzweig, Edip Sevincer
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Patent number: 9920417Abstract: An article including a substrate and a plurality of coatings disposed on the substrate is presented. The plurality of coatings includes a thermal barrier coating disposed on the substrate; and a protective coating including a calcium-magnesium-aluminum-silicon-oxide (CMAS)-reactive material disposed on the thermal barrier coating. The CMAS-reactive material includes an NZP-type material. The CMAS-reactive material is present in the plurality of coatings in an effective amount to react with a CMAS composition at an operating temperature of the thermal barrier coating, thereby forming a reaction product having one or both of melting temperature and viscosity greater than that of the CMAS composition. A method of making the article and a related turbine engine component are also presented.Type: GrantFiled: October 27, 2014Date of Patent: March 20, 2018Assignee: GENERAL ELECTRIC COMPANYInventors: Digamber Gurudas Porob, Shankar Sivaramakrishnan, Venkat Subramaniam Venkataramani, Mohandas Nayak, Gopi Chandran Ramachandran
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Publication number: 20180071820Abstract: A method of binder jet printing a metal part includes depositing a layer of a metal powder on a working surface of a binder jet printer and selectively printing a binder solution having a reversible binder into the layer of metal powder in a pattern to generate a printed layer. The pattern is representative of a structure of a layer of the metal part. The method also includes curing the reversible binder in the printed layer to generate a layer of a green body metal part and heating the green body metal part above a first temperature to remove a substantial portion of the reversible binder and generate a brown body metal part. The reversible binder is thermally decomposed to generate oligomers that remain within and strengthen the brown body metal part. The method further includes heating the brown body metal part above a second temperature to remove the oligomers and sinter the metal powder to generate the metal part. The metal part is substantially free of char residue.Type: ApplicationFiled: September 9, 2016Publication date: March 15, 2018Inventors: Arunkumar Natarajan, Rajendra Madhukar Kelkar, Jeffrey Jon Schoonover, Prabhjot Singh, Venkat Subramaniam Venkataramani, Kwok Pong Chan, John Leman
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Patent number: 9869188Abstract: Articles having coatings that are resistant to high temperature degradation are described, along with methods for making such articles. The article comprises a coating disposed on a substrate. The coating comprises a plurality of elongated surface-connected voids. The article further includes a protective agent disposed within at least some of the voids of the coating; the protective agent comprises a substance capable of chemically reacting with liquid nominal CMAS to form a solid crystalline product outside the crystallization field of said nominal CMAS. This solid crystalline product has a melting temperature greater than about 1200 degrees Celsius. The method generally includes disposing the protective agent noted above within the surface connected voids of the coating at an effective concentration to substantially prevent incursion of CMAS materials into the voids in which the protective agent is disposed.Type: GrantFiled: December 12, 2014Date of Patent: January 16, 2018Assignee: General Electric CompanyInventors: Kristen Hall Brosnan, Shahana Chatterjee, Wayne Charles Hasz, Mohandas Nayak, Digamber Gurudas Porob, Gopi Chandran Ramachandran, Larry Steven Rosenzweig, Shankar Sivaramakrishnan, Alok Mani Srivastava, Venkat Subramaniam Venkataramani
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Publication number: 20180001336Abstract: The present invention is directed to a squeegee apparatus which includes a main housing including an inlet end and an outlet end, the outlet end including an extrusion face and a protruding lip member, the inlet end including an inlet opening and the extrusion face including at least one outlet opening, wherein the inlet opening and the at least one outlet opening are in fluid communication with each other within the main housing. The present invention is also directed to a method for repairing a thermal barrier coating with a squeegee apparatus including supplying a repair composition into the inlet opening of the squeegee apparatus and depositing the repair composition from the at least one outlet opening onto the damaged region and concurrently traversing the squeegee apparatus over the damaged region while contacting a thermal barrier coating adjacent to the damaged region with the lip member.Type: ApplicationFiled: June 30, 2016Publication date: January 4, 2018Applicant: GENERAL ELECTRIC COMPANYInventors: Pei-Hsin KUO, Weston Blaine GRIFFIN, Venkat Subramaniam VENKATARAMANI, Hrishikesh KESHAVAN
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Publication number: 20170370239Abstract: A turbine system including a sealing component is presented. The sealing component includes a ceramic material. The ceramic material includes grains having an average grain size of less than 10 microns. A turbine shroud assembly including the sealing component is also presented.Type: ApplicationFiled: June 22, 2016Publication date: December 28, 2017Inventors: Venkat Subramaniam Venkataramani, Neelesh Nandkumar Sarawate, Anthony Christopher Marin, Wayne Charles Hasz, Stephen Francis Bancheri, Edip Sevincer
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Patent number: 9841195Abstract: In accordance with one aspect of the present invention, a heating device is presented. The heating device includes a pyrocatalytic, non-stick coating disposed on at least one surface. The pyrocatalytic non-stick coating includes (i) a binder derived from a silane, a polysiloxane, a polysilazane, or combinations thereof; and (ii) a catalyst dispersed within the binder, wherein the catalyst comprises a pervoskite crystalline material, a pyrochlore crystalline material, a spinel crystalline material, an ilmenite crystalline material, or combinations hereof.Type: GrantFiled: February 28, 2013Date of Patent: December 12, 2017Assignee: Haier US Appliance Solutions, Inc.Inventors: Venkat Subramaniam Venkataramani, Ravikanth Raju Abbaraju
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Patent number: 9803484Abstract: Articles, such as components for high temperature turbomachinery components, include one or more coatings bearing certain perovskite compositions resistant to incursion by liquid calcium-magnesium-aluminum-silicon-oxide (CMAS) materials during service. The CMAS-reactive material includes a perovskite-structured oxide, which comprises a) a rare earth element, b) niobium, tantalum or a combination of tantalum and niobium, and c) oxygen. The CMAS-reactive material is present in an effective amount to react with a CMAS composition at an operating temperature, thereby forming a reaction product having one or both of melting temperature and viscosity greater than that of the CMAS composition.Type: GrantFiled: December 19, 2014Date of Patent: October 31, 2017Assignee: General Electric CompanyInventors: Venkat Subramaniam Venkataramani, Shahana Chatterjee, Mohandas Nayak, Shankar Sivaramakrishnan
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Patent number: 9790587Abstract: An article including a substrate and a plurality of coatings disposed on the substrate is presented. The plurality of coatings includes a thermal barrier coating disposed on the substrate; and a protective coating including a calcium-magnesium-aluminum-silicon-oxide (CMAS)-reactive material disposed on the thermal barrier coating. The CMAS-reactive material has an orthorhombic weberite crystal structure. The CMAS-reactive material is present in the plurality of coatings in an effective amount to react with a CMAS composition at an operating temperature of the thermal barrier coating, thereby forming a reaction product having one or both of melting temperature and viscosity greater than that of the CMAS composition. A method of making the article and a related turbine engine component are also presented.Type: GrantFiled: October 28, 2014Date of Patent: October 17, 2017Assignee: General Electric CompanyInventors: Mohandas Nayak, Shankar Sivaramakrishnan, Venkat Subramaniam Venkataramani, Alok Mani Srivastava, Shahana Chatterjee
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Publication number: 20170058686Abstract: A coated seal slot system for turbomachinery includes a first turbine component comprising a first groove having at least one first coating attached to at least a portion of the first groove of the first turbine component, a second turbine component comprising a second groove having at least one second coating attached to at least a portion of the second groove of the second turbine component. The first and the second turbine components are disposable adjacent to each other with the first groove having the first coating and the second groove having the second coating together forming a coated seal slot extending across a gap between the first turbine component and the second turbine component. A seal is disposable in the coated seal slot and extendable across the gap between the first and the second turbine components and engageable with the first coating and the second coating to inhibit leakage of gas through the gap.Type: ApplicationFiled: August 25, 2015Publication date: March 2, 2017Applicant: GENERAL ELECTRIC COMPANYInventors: Stephen Francis BANCHERI, Venkat Subramaniam VENKATARAMANI, Glen Harold KIRBY, Neelesh Nandkumar SARAWATE, Nicholas Edward ANTOLINO, Edip SEVINCER, Anthony Christopher MARIN
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Publication number: 20170030211Abstract: The present application provides slot seals for reducing leakages between adjacent components of turbomachinery. The seals may include a metallic shim and a coating overlying the metallic shim. The coating may be a metallic coating, a glass coating, an enamel coating or a ceramic coating. The coating may form an outer surface of the seal for engagement with seal slot surfaces of a seal slot of a turbomachine. The coating may be operable to conform to surface irregularities of the seal slot surfaces and remain coupled to the metallic shim at a predefined operating temperature and a predefined operating pressure to reduce leakage past the seal and thereby between the components. The coating may be configured to flow into depressions formed by the surface irregularities of the seal slot surfaces and remain coupled to the metallic shim at the predefined operating temperature and the predefined operating pressure.Type: ApplicationFiled: July 28, 2015Publication date: February 2, 2017Applicant: GENERAL ELECTRIC COMPANYInventors: Anthony Christopher MARIN, Venkat Subramaniam VENKATARAMANI, Neelesh Nandkumar SARAWATE, Edip SEVINCER
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Publication number: 20170011820Abstract: An insulated winding is provided, wherein the insulated winding includes (a) an electrically conductive core; (b) an electrically insulating non-porous ceramic coating disposed on the conductive core; and (c) a composite silicone coating including a plurality of electrically insulating filler particles disposed on the ceramic coating. Further, a method of making an insulated winding is also provided.Type: ApplicationFiled: July 10, 2015Publication date: January 12, 2017Inventors: Weijun Yin, Ming Yin, David Gilles Gascoyne, Slawomir Rubinsztajn, Venkat Subramaniam Venkataramani, Daniel Qi Tan
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Publication number: 20160177746Abstract: Articles, such as components for high temperature turbomachinery components, include one or more coatings bearing certain perovskite compositions resistant to incursion by liquid calcium-magnesium-aluminum-silicon-oxide (CMAS) materials during service. The CMAS-reactive material includes a perovskite-structured oxide, which comprises a) a rare earth element, b) niobium, tantalum or a combination of tantalum and niobium, and c) oxygen. The CMAS-reactive material is present in an effective amount to react with a CMAS composition at an operating temperature, thereby forming a reaction product having one or both of melting temperature and viscosity greater than that of the CMAS composition.Type: ApplicationFiled: December 19, 2014Publication date: June 23, 2016Inventors: Venkat Subramaniam Venkataramani, Shahana Chatterjee, Mohandas Nayak, Shankar Sivaramakrishnan