Patents by Inventor Venkatarama K. Seetharaman

Venkatarama K. Seetharaman 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: 10752554
    Abstract: An intermetallic matrix composite has an intermetallic matrix and a ceramic reinforcement. The intermetallic matrix comprises, in atomic percent: 28.0±2.0 Nb; 27.0±2.0 Mo; 27.0±2.0 Cr; 9.0 ±2.0 Si; 9.0 ±2.0 Al; and no more than 10.0 other alloying elements and impurities, if any.
    Type: Grant
    Filed: November 21, 2019
    Date of Patent: August 25, 2020
    Assignee: Raytheon Technologies Corporation
    Inventors: Dilip M. Shah, Venkatarama K. Seetharaman
  • Patent number: 10661380
    Abstract: A method for joining engine components includes positioning a first plurality of thermal protection structures across a thermal protection space between a first thermal protection surface and a second thermal protection surface. The first and second engine components are locally joined by forming a first plurality of transient liquid phase (TLP) or partial transient liquid phase (PTLP) bonds along corresponding ones of the first plurality of thermal protection structures between the first thermal protection surface and the second thermal protection surface. The second thermal protection surface is formed from a second surface material different from a first surface material of the first thermal protection surface.
    Type: Grant
    Filed: March 6, 2017
    Date of Patent: May 26, 2020
    Assignee: United Technologies Corporation
    Inventors: Grant O. Cook, III, Kevin W. Schlichting, Venkatarama K. Seetharaman
  • Publication number: 20200088040
    Abstract: A method for manufacturing a blade, the method includes casting a nickel alloy blade precursor having an airfoil and a root. The airfoil and the root are solution heat treating differently from each other. After the solution heat treating, the root is wrought processed. After the wrought processing, an exterior of the root is machined.
    Type: Application
    Filed: September 14, 2018
    Publication date: March 19, 2020
    Applicant: United Technologies Corporation
    Inventors: Dilip M. Shah, Alan D. Cetel, Venkatarama K. Seetharaman
  • Publication number: 20200024716
    Abstract: A process includes solution heat treating a nickel based superalloy with greater than about 40% by volume of gamma prime precipitate to dissolve the gamma prime precipitate in the nickel based superalloy; cooling the nickel based superalloy to about 85% of a solution temperature measured on an absolute scale to coarsen the gamma prime precipitate such that a precipitate structure is greater than about 0.7 micron size; and wrought processing the nickel based superalloy at a temperature below a recrystallization temperature of the nickel based superalloy. A material includes a nickel based superalloy with greater than about 40% by volume of gamma prime precipitate in which the precipitate structure is greater than about 0.7 micron size.
    Type: Application
    Filed: December 10, 2018
    Publication date: January 23, 2020
    Applicant: United Technologies Corporation
    Inventors: Dilip M. Shah, Alan D. Cetel, Venkatarama K. Seetharaman
  • Publication number: 20190292920
    Abstract: A hollow turbine airfoil or a hollow turbine casting including a cooling passage partition. The cooling passage partition is formed from a single crystal grain structure nickel based super alloy, a cobalt based super alloy, a nickel-aluminum based alloy, or a coated refractory metal.
    Type: Application
    Filed: March 23, 2018
    Publication date: September 26, 2019
    Inventors: Dilip M. Shah, Alan D. Cetel, Venkatarama K. Seetharaman, Raymond Surace
  • Patent number: 10369625
    Abstract: A method for casting comprising: providing a seed, the seed characterized by: an arcuate form and a crystalline orientation progressively varying along an arc of the form; providing molten material; and cooling and solidifying the molten material so that a crystalline structure of the seed propagates into the solidifying material.
    Type: Grant
    Filed: June 5, 2015
    Date of Patent: August 6, 2019
    Assignee: United Technologies Corporation
    Inventors: Dilip M. Shah, Paul D. Genereux, Alan D. Cetel, John J. Marcin, Jr., Steven J. Bullied, Mario P. Bochiechio, Kevin W. Schlichting, Bradford A. Cowles, Carl R. Verner, David U. Furrer, Venkatarama K. Seetharaman
  • Patent number: 10352183
    Abstract: An embodiment of a turbine assembly includes, among other possible things, a first component including a first component surface, a second component including a second component surface spaced apart from the first component surface, and a brush seal disposed between the first component and the second component. The brush seal includes, among other things, a first bristled region extending in a first direction from a backing plate, and sealingly engaging one of the first component surface and the second component surface. At least one of the backing plate and the first bristled region includes a nickel-based superalloy material having at least 40% of a Ni3(Al,X) precipitate phase, X being a metallic or refractory element other than Al.
    Type: Grant
    Filed: April 25, 2016
    Date of Patent: July 16, 2019
    Assignee: United Technologies Corporation
    Inventors: Dilip M. Shah, Katelyn Kwoka, Alan D. Cetel, Venkatarama K. Seetharaman, Michael G. McCaffrey
  • Patent number: 10301711
    Abstract: A process includes solution heat treating a nickel based superalloy with greater than about 40% by volume of gamma prime precipitate to dissolve the gamma prime precipitate in the nickel based superalloy; cooling the nickel based superalloy to about 85% of a solution temperature measured on an absolute scale to coarsen the gamma prime precipitate such that a precipitate structure is greater than about 0.7 micron size; and wrought processing the nickel based superalloy at a temperature below a recrystallization temperature of the nickel based superalloy. A material includes a nickel based superalloy with greater than about 40% by volume of gamma prime precipitate in which the precipitate structure is greater than about 0.7 micron size.
    Type: Grant
    Filed: September 28, 2015
    Date of Patent: May 28, 2019
    Assignee: United Technologies Corporation
    Inventors: Dilip M Shah, Alan D Cetel, Venkatarama K Seetharaman
  • Patent number: 10273816
    Abstract: A fan blade of a gas turbine engine includes an airfoil, a root received in a slot of a hub, and a wear pad covering at least a portion of the root and made of an integrally bonded woven composite laminate.
    Type: Grant
    Filed: February 3, 2014
    Date of Patent: April 30, 2019
    Assignee: UNITED TECHNOLOGIES CORPORATION
    Inventors: Jay T. Abraham, Ethan C. Drew, Scott C. Billings, Michael A. Weisse, James O. Hansen, Venkatarama K. Seetharaman
  • Patent number: 10265763
    Abstract: A method for casting comprising: providing a seed, the seed characterized by: an arcuate form and a crystalline orientation progressively varying along an arc of the form; providing molten material; and cooling and solidifying the molten material so that a crystalline structure of the seed propagates into the solidifying material.
    Type: Grant
    Filed: October 5, 2018
    Date of Patent: April 23, 2019
    Assignee: United Technologies Corporation
    Inventors: Dilip M. Shah, Paul D. Genereux, Alan D. Cetel, John J. Marcin, Jr., Steven J. Bullied, Mario P. Bochiechio, Kevin W. Schlichting, Bradford A. Cowles, Carl R. Verner, David U. Furrer, Venkatarama K. Seetharaman
  • Publication number: 20190039128
    Abstract: A method for casting comprising: providing a seed, the seed characterized by: an arcuate form and a crystalline orientation progressively varying along an arc of the form; providing molten material; and cooling and solidifying the molten material so that a crystalline structure of the seed propagates into the solidifying material.
    Type: Application
    Filed: October 5, 2018
    Publication date: February 7, 2019
    Applicant: United Technologies Corporation
    Inventors: Dilip M. Shah, Paul D. Genereux, Alan D. Cetel, John J. Marcin, JR., Steven J. Bullied, Mario P. Bochiechio, Kevin W. Schlichting, Bradford A. Cowles, Carl R. Verner, David U. Furrer, Venkatarama K. Seetharaman
  • Patent number: 10150159
    Abstract: An investment casting apparatus includes a furnace having an opening, a mold support, and a multi-axis actuator connected with the mold support and configured to retract the mold support from the opening with multiple-axis motion. An investment casting method includes withdrawing, with multiple-axis motion, a mold through the opening of the furnace to solidify a molten metal- or metalloid-based material in the mold. The apparatus and method can be used to form a cast article that has a body formed of the metal- or metalloid-based material. The body has a multi-textured, single crystal microstructure.
    Type: Grant
    Filed: January 9, 2015
    Date of Patent: December 11, 2018
    Assignee: UNITED TECHNOLOGIES CORPORATION
    Inventors: Steven J. Bullied, David Ulrich Furrer, John Joseph Marcin, Venkatarama K. Seetharaman
  • Publication number: 20180231478
    Abstract: Aspects of the disclosure are directed to an analysis of a material of a component. A radiation source is activated to transmit radiation to the component. A beam pattern is obtained based on the component interfering with the radiation. The beam pattern is compared to a reference beam pattern. An anomaly is detected to exist in the material when the comparison indicates a deviation between the beam pattern and the reference beam pattern.
    Type: Application
    Filed: April 9, 2018
    Publication date: August 16, 2018
    Inventors: Iuliana Cernatescu, David U. Furrer, Venkatarama K. Seetharaman
  • Patent number: 9939393
    Abstract: Aspects of the disclosure are directed to an analysis of a material of a component. A radiation source is activated to transmit radiation to the component. A beam pattern is obtained based on the component interfering with the radiation. The beam pattern is compared to a reference beam pattern. An anomaly is detected to exist in the material when the comparison indicates a deviation between the beam pattern and the reference beam pattern.
    Type: Grant
    Filed: September 28, 2015
    Date of Patent: April 10, 2018
    Assignee: United Technologies Corporation
    Inventors: Iuliana Cernatescu, David U. Furrer, Venkatarama K. Seetharaman
  • Publication number: 20180051360
    Abstract: A formable nickel based superalloy composition including a two phase ?/?? precipitation hardenable nickel base superalloy with a sum of primarily ?? forming elements in atom % is in the range of about 10-16, forming about a 40-64 volume % of the ?? precipitate, cast in form of a single crystal.
    Type: Application
    Filed: August 16, 2016
    Publication date: February 22, 2018
    Applicant: United Technologies Corporation
    Inventors: Dilip M. Shah, Alan D. Cetel, Venkatarama K. Seetharaman
  • Publication number: 20170306782
    Abstract: An embodiment of a turbine assembly includes, among other possible things, a first component including a first component surface, a second component including a second component surface spaced apart from the first component surface, and a brush seal disposed between the first component and the second component. The brush seal includes, among other things, a first bristled region extending in a first direction from a backing plate, and sealingly engaging one of the first component surface and the second component surface. At least one of the backing plate and the first bristled region includes a nickel-based superalloy material having at least 40% of a Ni3(Al,X) precipitate phase, X being a metallic or refractory element other than Al.
    Type: Application
    Filed: April 25, 2016
    Publication date: October 26, 2017
    Inventors: Dilip M. Shah, Katelyn Kwoka, Alan D. Cetel, Venkatarama K. Seetharaman, Michael G. McCaffrey
  • Publication number: 20170173729
    Abstract: A method for joining engine components includes positioning a first plurality of thermal protection structures across a thermal protection space between a first thermal protection surface and a second thermal protection surface. The first and second engine components are locally joined by forming a first plurality of transient liquid phase (TLP) or partial transient liquid phase (PTLP) bonds along corresponding ones of the first plurality of thermal protection structures between the first thermal protection surface and the second thermal protection surface. The second thermal protection surface is formed from a second surface material different from a first surface material of the first thermal protection surface.
    Type: Application
    Filed: March 6, 2017
    Publication date: June 22, 2017
    Inventors: Grant O. Cook, III, Kevin W. Schlichting, Venkatarama K. Seetharaman
  • Publication number: 20170088926
    Abstract: A process includes solution heat treating a nickel based superalloy with greater than about 40% by volume of gamma prime precipitate to dissolve the gamma prime precipitate in the nickel based superalloy; cooling the nickel based superalloy to about 85% of a solution temperature measured on an absolute scale to coarsen the gamma prime precipitate such that a precipitate structure is greater than about 0.7 micron size; and wrought processing the nickel based superalloy at a temperature below a recrystallization temperature of the nickel based superalloy. A material includes a nickel based superalloy with greater than about 40% by volume of gamma prime precipitate in which the precipitate structure is greater than about 0.7 micron size.
    Type: Application
    Filed: September 28, 2015
    Publication date: March 30, 2017
    Inventors: Dilip M. Shah, Alan D. Cetel, Venkatarama K. Seetharaman
  • Publication number: 20170089845
    Abstract: Aspects of the disclosure are directed to an analysis of a material of a component. A radiation source is activated to transmit radiation to the component. A beam pattern is obtained based on the component interfering with the radiation. The beam pattern is compared to a reference beam pattern. An anomaly is detected to exist in the material when the comparison indicates a deviation between the beam pattern and the reference beam pattern.
    Type: Application
    Filed: September 28, 2015
    Publication date: March 30, 2017
    Inventors: Iuliana Cernatescu, David U. Furrer, Venkatarama K. Seetharaman
  • Patent number: 9586868
    Abstract: A method for joining engine components includes positioning a first plurality of thermal protection structures across a thermal protection space between a first thermal protection surface and a second thermal protection surface. The first and second engine components are locally joined by forming a first plurality of transient liquid phase (TLP) or partial transient liquid phase (PTLP) bonds along corresponding ones of the first plurality of thermal protection structures between the first thermal protection surface and the second thermal protection surface. The second thermal protection surface is formed from a second surface material different from a first surface material of the first thermal protection surface.
    Type: Grant
    Filed: August 15, 2014
    Date of Patent: March 7, 2017
    Assignee: United Technologies Corporation
    Inventors: Grant O. Cook, III, Kevin W. Schlichting, Venkatarama K. Seetharaman