Patents by Inventor Biju Dasan
Biju Dasan 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: 20240158921Abstract: A composition includes aluminum (Al), and a blend of a carbide and nickel-chromium (Ni-20Cr). The method of applying a coating composition includes blending a carbide and nickel-chromium (Ni-20Cr) with aluminum (Al) to form a composition, the carbide and the nickel-chromium (Ni-20Cr) in a range between 90% and about 99.5% by weight of the composition, and wherein the aluminum (Al) is in a range between about 0.5% and less than about 10% by weight of the composition; and spraying the composition on the turbine component.Type: ApplicationFiled: November 15, 2022Publication date: May 16, 2024Inventors: Eklavya Calla, Biju Dasan, Ritwik Biswas, Maxim Konter
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Publication number: 20240149341Abstract: A method includes applying a material coating to a surface of a machine component, wherein the material coating is formed from a combination of a hardfacing material, aluminum-containing particles, and a braze material. The method also includes thermally treating the material coating at a temperature to generate an oxide layer comprising aluminum from the aluminum-containing particles, wherein the oxide layer is configured to reduce oxidation of the hardfacing material, and the braze material is configured to facilitate binding between the material coating and the surface of the machine component.Type: ApplicationFiled: December 19, 2023Publication date: May 9, 2024Inventors: Surinder Singh Pabla, Srikanth C. Kottilingam, David Vincent Bucci, Biju Dasan
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Patent number: 11939680Abstract: A method includes applying a material coating on a surface of a machine component using a thermal spray, wherein the material coating is formed from a combination of a hardfacing material and aluminum-containing particles. The method also includes thermally treating the material coating to generate an oxide layer comprising aluminum from the aluminum-containing particles, wherein the oxide layer is configured to reduce oxidation of the hardfacing material.Type: GrantFiled: March 8, 2023Date of Patent: March 26, 2024Assignee: GE Infrastructure Technology LLCInventors: Krishnamurthy Anand, Surinder Singh Pabla, Lacey Lynn Schwab, Biju Dasan, Seung-Woo Choi, Sathisha Chikkabikkodu Hanum, Ravikiran Kopparthi, David Vincent Bucci
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Patent number: 11865622Abstract: A method includes applying a material coating to a surface of a machine component, wherein the material coating is formed from a combination of a hardfacing material, aluminum-containing particles, and a braze material. The method also includes thermally treating the material coating at a temperature to generate an oxide layer comprising aluminum from the aluminum-containing particles, wherein the oxide layer is configured to reduce oxidation of the hardfacing material, and the braze material is configured to facilitate binding between the material coating and the surface of the machine component.Type: GrantFiled: August 30, 2021Date of Patent: January 9, 2024Assignee: General Electric CompanyInventors: Surinder Singh Pabla, Srikanth C. Kottilingam, David Vincent Bucci, Biju Dasan
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Publication number: 20230287542Abstract: A composition, a machine component coated with the same, and a method of coating the machine component are provided. The composition includes a CoNiCrAlY alloy, where three or more elements of the CoNiCrAlY alloy are present in equimolar amounts, one of the three or more elements of the CoNiCrAlY alloy being aluminum (Al), and where a molar fraction of Al is between about 0.20 and about 0.25. The composition further includes a transition metal boride including at least one of: cobalt boride (Co2B), titanium boride (TiB2), zirconium boride (ZrB2), tantalum boride (TaB2), niobium boride (NiB2), or molybdenum boride (Mo2B), and a refractory alloy.Type: ApplicationFiled: April 22, 2022Publication date: September 14, 2023Inventors: Sathisha Chikkabikkodu Hanum, Mohandas Nayak, Surinder Singh Pabla, Biju Dasan
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Publication number: 20230227957Abstract: A method includes applying a material coating on a surface of a machine component using a thermal spray, wherein the material coating is formed from a combination of a hardfacing material and aluminum-containing particles. The method also includes thermally treating the material coating to generate an oxide layer comprising aluminum from the aluminum-containing particles, wherein the oxide layer is configured to reduce oxidation of the hardfacing material.Type: ApplicationFiled: March 8, 2023Publication date: July 20, 2023Inventors: Krishnamurthy Anand, Surinder Singh Pabla, Lacey Lynn Schwab, Biju Dasan, Seung-Woo Choi, Sathisha Chikkabikkodu Hanum, Ravikiran Kopparthi, David Vincent Bucci
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Patent number: 11603588Abstract: A method includes applying a material coating on a surface of a machine component using a thermal spray, wherein the material coating is formed from a combination of a hardfacing material and aluminum-containing particles. The method also includes thermally treating the material coating to generate an oxide layer comprising aluminum from the aluminum-containing particles, wherein the oxide layer is configured to reduce oxidation of the hardfacing material.Type: GrantFiled: August 30, 2021Date of Patent: March 14, 2023Assignee: General Electric CompanyInventors: Krishnamurthy Anand, Surinder Singh Pabla, Lacey Lynn Schwab, Biju Dasan, Seung-Woo Choi, Sathisha Chikkabikkodu Hanum, Ravikiran Kopparthi, David Vincent Bucci
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Publication number: 20230068810Abstract: A method includes applying a material coating to a surface of a machine component, wherein the material coating is formed from a combination of a hardfacing material, aluminum-containing particles, and a braze material. The method also includes thermally treating the material coating at a temperature to generate an oxide layer comprising aluminum from the aluminum-containing particles, wherein the oxide layer is configured to reduce oxidation of the hardfacing material, and the braze material is configured to facilitate binding between the material coating and the surface of the machine component.Type: ApplicationFiled: August 30, 2021Publication date: March 2, 2023Inventors: Surinder Singh Pabla, Srikanth C. Kottilingam, David Vincent Bucci, Biju Dasan
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Publication number: 20230065105Abstract: A method includes applying a material coating on a surface of a machine component using a thermal spray, wherein the material coating is formed from a combination of a hardfacing material and aluminum-containing particles. The method also includes thermally treating the material coating to generate an oxide layer comprising aluminum from the aluminum-containing particles, wherein the oxide layer is configured to reduce oxidation of the hardfacing material.Type: ApplicationFiled: August 30, 2021Publication date: March 2, 2023Inventors: Krishnamurthy Anand, Surinder Singh Pabla, Lacey Lynn Schwab, Biju Dasan, Seung-Woo Choi, Sathisha Chikkabikkodu Hanum, Ravikiran Kopparthi, David Vincent Bucci
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Patent number: 11149354Abstract: Various embodiments include a dense abradable coating, a method of reducing rub damage to a turbine engine part by applying the dense abradable coating thereto, and a turbine engine part having the abradable coating thereon. Particular embodiments include a dense abradable coating including a pore-free metallic composite, a high-aluminum containing brittle alloy, and a plurality of hollow abradable particles.Type: GrantFiled: February 20, 2019Date of Patent: October 19, 2021Assignee: General Electric CompanyInventors: Krishnamurthy Anand, Eklavya Calla, Biju Dasan, Surinder Singh Pabla, Priyanka Saxena
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Publication number: 20200263307Abstract: Various embodiments include a dense abradable coating, a method of reducing rub damage to a turbine engine part by applying the dense abradable coating thereto, and a turbine engine part having the abradable coating thereon. Particular embodiments include a dense abradable coating including a pore-free metallic composite, a high-aluminum containing brittle alloy, and a plurality of hollow abradable particles.Type: ApplicationFiled: February 20, 2019Publication date: August 20, 2020Inventors: Krishnamurthy Anand, Eklavya Calla, Biju Dasan, Surinder Singh Pabla, Priyanka Saxena
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Publication number: 20200080183Abstract: A treatment process for treating an article including a superalloy having a degraded microstructure is presented. The process includes subjecting the article to a first heat-treatment including successively heating and cooling the article between a low-end temperature and a high-end temperature and subjecting the article to a second heat-treatment at a solution annealing temperature in a range of from about 80 degrees Fahrenheit below a gamma-prime solvus temperature of the superalloy to about 80 degrees Fahrenheit above the gamma-prime solvus temperature of the superalloy after performing the first heat-treatment. The low-end temperature is in a range of from about 1000 degrees Fahrenheit to about 1800 degrees Fahrenheit and the high-end temperature is in a range of from about 1900 degrees Fahrenheit to about 2250 degrees Fahrenheit.Type: ApplicationFiled: November 30, 2017Publication date: March 12, 2020Applicant: General Electric CompanyInventors: Raghavendra Rao Adharapurapu, Sanjay Kumar Sondhi, Biju Dasan, Laurent Cretegny, Joseph John Martell, Warren Davis Grossklaus, Jr.
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Patent number: 8038764Abstract: A method of recovering rhenium from rhenium-containing superalloy scrap is provided. The superalloy is usually a nickel-based superalloy. The method includes the steps of forming an oxidation feedstock of flaky morphology of the superalloy scrap, and oxidizing the oxidation feedstock to convert rhenium into a volatile rhenium oxide. The flaky morphology of the oxidation feedstock is achieved by increasing the surface area of the superalloy scrap.Type: GrantFiled: November 30, 2009Date of Patent: October 18, 2011Assignee: General Electric CompanyInventors: Biju Dasan, Barath Palanisamy, Don Mark Lipkin, Leonardo Ajdelsztajn, Joshua Leigh Miller, Srinidhi Sampath
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Publication number: 20110126673Abstract: A method of recovering rhenium from rhenium-containing superalloy scrap is provided. The superalloy is usually a nickel-based superalloy. The method includes the steps of forming an oxidation feedstock of flaky morphology of the superalloy scrap, and oxidizing the oxidation feedstock to convert rhenium into a volatile rhenium oxide. The flaky morphology of the oxidation feedstock is achieved by increasing the surface area of the superalloy scrap.Type: ApplicationFiled: November 30, 2009Publication date: June 2, 2011Applicant: GENERAL ELECTRIC COMPANYInventors: Biju Dasan, Barath Palanisamy, Don Mark Lipkin, Leonardo Ajdelsztajn, Joshua Leigh Miller, Srinidhi Sampath
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Publication number: 20100304181Abstract: A coating composition is described, having a first coating layer which includes a nickel-chromium matrix in which metal carbide particles are dispersed; and a hard, dense second coating layer disposed over the first coating layer. The second coating layer is formed from a metal nitride-type material, and has an average roughness of less than about 80 micro-inches (Ra). Related articles and processes are also disclosed.Type: ApplicationFiled: May 29, 2009Publication date: December 2, 2010Applicant: GENERAL ELECTRIC COMPANYInventors: Krishnamurthy Anand, Tamara Jean Muth, Srinidhi Sampath, Prajina Bhattacharya, Biju Dasan
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Publication number: 20100304084Abstract: A coating composition is described, having a first coating layer which includes a metallic matrix in which metal carbide particles are dispersed; and a hard, dense second coating layer disposed over the first coating layer. The second coating layer is formed from a metal nitride-type material, and has an average roughness of less than about 80 micro-inches (Ra). Related articles and processes are also disclosed.Type: ApplicationFiled: September 30, 2009Publication date: December 2, 2010Applicant: GENERAL ELECTRIC COMPANYInventors: Krishnamurthy Anand, Tamara Jean Muth, Srinidhi Sampath, Prajina Bhattacharya, Biju Dasan