Patents by Inventor Sayantan Roy

Sayantan Roy 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: 10940673
    Abstract: A method of forming a structure for a downhole application comprises forming an interfacial material comprising at least one of self-reinforced polyphenylene, polyphenylene sulfide, polysulfone, and polyphenylsulfone between opposing surfaces of a first substrate and a second substrate. A downhole structure and a downhole assembly are also described.
    Type: Grant
    Filed: June 29, 2017
    Date of Patent: March 9, 2021
    Assignee: Baker Hughes Holdings LLC
    Inventors: Jeffrey R. Potts, Sayantan Roy, Michael H. Johnson, Anil K. Sadana
  • Patent number: 10851611
    Abstract: A hybrid article comprises a disintegrable metal comprising one or more of the following: Mg; Al; Zn; Mn; an alloy thereof; or a composite thereof; and a disintegrable polymer comprising one or more of the following: an epoxy polymer derived from an epoxy base and a curing agent having cleavable bonds; a cured cyanate ester; or a poly(hexahydrotriazine).
    Type: Grant
    Filed: March 23, 2017
    Date of Patent: December 1, 2020
    Assignee: BAKER HUGHES, A GE COMPANY, LLC
    Inventors: Suman Khatiwada, John C. Welch, Anil K. Sadana, Sayantan Roy
  • Patent number: 10642611
    Abstract: The present subject matter relates to size estimation of a plurality of user stories for agile software development. The plurality of user stories associated with a software may be obtained, and a base size for each of the plurality of user stories may be computed based on at least one basic parameter. The at least one basic parameter is indicative of a parameter affecting complexity associated with execution of a user story. Subsequently, an additional size for the plurality of user stories may be ascertained, based on at least one additional parameter. The at least one additional parameter is indicative of an environmental factor affecting delivery of the software. The overall size of the plurality of user stories is determined by consolidating the base size for each user story with the additional size for the plurality of user stories.
    Type: Grant
    Filed: September 17, 2014
    Date of Patent: May 5, 2020
    Assignee: TATA CONSULTANCY SERVICES LIMITED
    Inventors: Pranabendu Bhattacharyya, Sharmila Das, Sayantan Roy
  • Patent number: 10497849
    Abstract: A thermoelectric composite includes a plurality of particles comprising a crosslinked polymer having a heat deflection temperature greater than or equal to 200° F. and a segregated network comprising a first filler material which is disposed between the particles to produce a thermoelectric response in response to application of a voltage difference or temperature difference across the thermoelectric composite. The first filler material includes a carbon material, a metal, a metal disposed on a carbon material, or a combination thereof. A process for preparing a thermoelectric article includes combining a first filler material and a plurality of particles comprising a polymer to form a composition and molding the composition to form a thermoelectric article, wherein the thermoelectric article is configured to produce a thermoelectric response in response to application of a voltage difference or temperature difference across the article.
    Type: Grant
    Filed: January 31, 2017
    Date of Patent: December 3, 2019
    Assignee: BAKER HUGHES, A GE COMPANY, LLC
    Inventors: Sayantan Roy, David Peter Gerrard, Oleksandr V. Kuznetsov
  • Patent number: 10190687
    Abstract: A superelastic metal seal for use in a downhole tool, wherein the superelastic metal seal may be formed from a superelastic Ni—Ti alloy. The superelastic Ni—Ti alloy may be prestrained with a permanent strain. Superelasticity may be imparted to the superelastic Ni—Ti alloy through a thermal treatment process or through prestraining the superelastic Ni—Ti alloy. The superelastic Ni—Ti alloy may exhibit superelastic behavior. The superelastic Ni—Ti alloy may not exhibit shape memory behavior.
    Type: Grant
    Filed: December 27, 2016
    Date of Patent: January 29, 2019
    Assignee: Baker Hughes Incorporated
    Inventors: Sayantan Roy, Anil K. Sadana
  • Patent number: 9835173
    Abstract: An electric submersible well pump assembly includes a pump and an electrical motor filled with a dielectric lubricant. A capsule extends around a portion of the motor, defining a chamber between the capsule and the motor. A port through a side wall of the motor communicates the lubricant within the motor to the chamber. Thermoelectric devices are located within the chamber. Voltage supplied to the thermoelectric devices cools the lubricant.
    Type: Grant
    Filed: September 4, 2014
    Date of Patent: December 5, 2017
    Assignee: Baker Hughes, a GE Company, LLC
    Inventors: Anil K. Sadana, Carlos A. Prieto, Sayantan Roy
  • Publication number: 20170297306
    Abstract: A method of forming a structure for a downhole application comprises forming an interfacial material comprising at least one of self-reinforced polyphenylene, polyphenylene sulfide, polysulfone, and polyphenylsulfone between opposing surfaces of a first substrate and a second substrate. A downhole structure and a downhole assembly are also described.
    Type: Application
    Filed: June 29, 2017
    Publication date: October 19, 2017
    Inventors: Jeffrey R. Potts, Sayantan Roy, Michael H. Johnson, Anil K. Sadana
  • Publication number: 20170291222
    Abstract: A hybrid article comprises a disintegrable metal comprising one or more of the following: Mg; Al; Zn; Mn; an alloy thereof; or a composite thereof; and a disintegrable polymer comprising one or more of the following: an epoxy polymer derived from an epoxy base and a curing agent having cleavable bonds; a cured cyanate ester; or a poly(hexahydrotriazine).
    Type: Application
    Filed: March 23, 2017
    Publication date: October 12, 2017
    Inventors: Suman Khatiwada, John C. Welch, Anil K. Sadana, Sayantan Roy
  • Patent number: 9777550
    Abstract: In one aspect, a degradable apparatus is disclosed, including: an inner core with a first degradation rate in a downhole environment; an outer sheath disposed around an outer extent of the inner core with a second degradation rate less than the first degradation rate in the downhole environment. In another aspect, a method of temporarily sealing a downhole zone is disclosed, including: providing an inner core with a first degradation rate in a downhole environment; providing an outer sheath disposed around an outer extent of the inner core with a second degradation rate less than the first degradation rate in the downhole environment; sealing the downhole zone with the outer sheath; exposing the outer sheath to the downhole environment; and exposing the inner core to the downhole environment.
    Type: Grant
    Filed: November 24, 2014
    Date of Patent: October 3, 2017
    Assignee: BAKER HUGHES INCORPORATED
    Inventors: James Doane, Wayne Furlan, Ping Duan, Sayantan Roy, Anil Sadana
  • Patent number: 9707642
    Abstract: Disclosed herein is a solder composition comprising a metal or a metal alloy; and an electrically conductive high temperature polymeric composition; where the electrically conductive high temperature polymeric composition is dispersed homogeneously in the metal; and where the electrically conductive high temperature polymeric composition has a higher glass transition temperature or a melting point than the flow temperature of the metal or metal alloy. Disclosed herein too is a method comprising mixing an electrically conductive high temperature polymeric composition with a metal or a metal alloy to form the solder composition; where the electrically conductive high temperature polymeric composition is dispersed homogeneously in the metal; and where the electrically conductive high temperature polymeric composition has a higher glass transition temperature or a melting point than the flow temperature of the metal or metal alloy.
    Type: Grant
    Filed: November 5, 2013
    Date of Patent: July 18, 2017
    Assignee: BAKER HUGHES INCORPORATED
    Inventors: David Peter Gerrard, Sayantan Roy
  • Publication number: 20170141283
    Abstract: A thermoelectric composite includes a plurality of particles comprising a crosslinked polymer having a heat deflection temperature greater than or equal to 200° F. and a segregated network comprising a first filler material which is disposed between the particles to produce a thermoelectric response in response to application of a voltage difference or temperature difference across the thermoelectric composite. The first filler material includes a carbon material, a metal, a metal disposed on a carbon material, or a combination thereof. A process for preparing a thermoelectric article includes combining a first filler material and a plurality of particles comprising a polymer to form a composition and molding the composition to form a thermoelectric article, wherein the thermoelectric article is configured to produce a thermoelectric response in response to application of a voltage difference or temperature difference across the article.
    Type: Application
    Filed: January 31, 2017
    Publication date: May 18, 2017
    Applicant: Baker Hughes Incorporated
    Inventors: Sayantan Roy, David Peter Gerrard, Oleksandr V. Kuznetsov
  • Publication number: 20170108123
    Abstract: A superelastic metal seal for use in a downhole tool, wherein the superelastic metal seal may be formed from a superelastic Ni—Ti alloy. The superelastic Ni—Ti alloy may be prestrained with a permanent strain. Superelasticity may be imparted to the superelastic Ni—Ti alloy through a thermal treatment process or through prestraining the superelastic Ni—Ti alloy. The superelastic Ni—Ti alloy may exhibit superelastic behavior. The superelastic Ni—Ti alloy may not exhibit shape memory behavior.
    Type: Application
    Filed: December 27, 2016
    Publication date: April 20, 2017
    Inventors: Sayantan Roy, Anil K. Sadana
  • Patent number: 9611937
    Abstract: A superelastic metal seal for use in a downhole tool, wherein the superelastic metal seal may be formed from a superelastic Ni—Ti alloy. The superelastic Ni—Ti alloy may be prestrained with a permanent strain. Superelasticity may be imparted to the superelastic Ni—Ti alloy through a thermal treatment process or through prestraining the superelastic Ni—Ti alloy. The superelastic Ni—Ti alloy may exhibit superelastic behavior. The superelastic Ni—Ti alloy may not exhibit shape memory behavior.
    Type: Grant
    Filed: October 29, 2014
    Date of Patent: April 4, 2017
    Assignee: Baker Hughes Incorporated
    Inventors: Sayantan Roy, Anil K. Sadana
  • Patent number: 9595654
    Abstract: A thermoelectric composite includes a plurality of particles comprising a crosslinked polymer having a heat deflection temperature greater than or equal to 200° F. and a segregated network comprising a first filler material which is disposed between the particles to produce a thermoelectric response in response to application of a voltage difference or temperature difference across the thermoelectric composite. The first filler material includes a carbon material, a metal, a metal disposed on a carbon material, or a combination thereof. A process for preparing a thermoelectric article includes combining a first filler material and a plurality of particles comprising a polymer to form a composition and molding the composition to form a thermoelectric article, wherein the thermoelectric article is configured to produce a thermoelectric response in response to application of a voltage difference or temperature difference across the article.
    Type: Grant
    Filed: May 21, 2013
    Date of Patent: March 14, 2017
    Assignee: BAKER HUGHES INCORPORATED
    Inventors: Sayantan Roy, David Peter Gerrard, Oleksandr V. Kuznetsov
  • Publication number: 20160145485
    Abstract: In one aspect, degradable material is disclosed, including: a polyurethane component with a first degradation rate in a downhole environment; and a corrosive additive component with a second degradation rate that is higher than a first degradation rate in the downhole environment. In another aspect, a method of temporarily sealing a downhole zone is disclosed, including: providing a polyurethane component with a first degradation rate in a downhole environment; providing a corrosive additive component with a second degradation rate that is higher than a first degradation rate in the downhole environment; mixing the polyurethane component and the corrosive additive component to form a degradable material; sealing the downhole zone with the degradable material; exposing the degradable material to the downhole environment; and degrading the degradable material.
    Type: Application
    Filed: November 24, 2014
    Publication date: May 26, 2016
    Applicant: BAKER HUGHES INCORPORATED
    Inventors: James Doane, Wayne Furlan, Ping Duan, Sayantan Roy, Anil Sadana
  • Publication number: 20160145964
    Abstract: In one aspect, a degradable apparatus is disclosed, including: an inner core with a first degradation rate in a downhole environment; an outer sheath disposed around an outer extent of the inner core with a second degradation rate less than the first degradation rate in the downhole environment. In another aspect, a method of temporarily sealing a downhole zone is disclosed, including: providing an inner core with a first degradation rate in a downhole environment; providing an outer sheath disposed around an outer extent of the inner core with a second degradation rate less than the first degradation rate in the downhole environment; sealing the downhole zone with the outer sheath; exposing the outer sheath to the downhole environment; and exposing the inner core to the downhole environment.
    Type: Application
    Filed: November 24, 2014
    Publication date: May 26, 2016
    Applicant: Baker Hughes Incorporated
    Inventors: James Doane, Wayne Furlan, Ping Duan, Sayantan Roy, Anil Sadana
  • Publication number: 20160123471
    Abstract: A superelastic metal seal for use in a downhole tool, wherein the superelastic metal seal may be formed from a superelastic Ni—Ti alloy. The superelastic Ni—Ti alloy may be prestrained with a permanent strain. Superelasticity may be imparted to the superelastic Ni—Ti alloy through a thermal treatment process or through prestraining the superelastic Ni—Ti alloy. The superelastic Ni—Ti alloy may exhibit superelastic behavior. The superelastic Ni—Ti alloy may not exhibit shape memory behavior.
    Type: Application
    Filed: October 29, 2014
    Publication date: May 5, 2016
    Inventors: Sayantan Roy, Anil K. Sadana
  • Publication number: 20160101600
    Abstract: A method of forming a structure for a downhole application comprises forming an interfacial material comprising at least one of self-reinforced polyphenylene, polyphenylene sulfide, polysulfone, and polyphenylsulfone between opposing surfaces of a first substrate and a second substrate. A downhole structure and a downhole assembly are also described.
    Type: Application
    Filed: October 9, 2014
    Publication date: April 14, 2016
    Inventors: Jeffrey R. Potts, Sayantan Roy, Michael H. Johnson, Anil K. Sadana
  • Patent number: 9303150
    Abstract: A composition contains a polymer component comprising a crosslinked product of a polyarylene, a crosslinked product of a substituted polyphenylene, a crosslinked product of a polyphenylene sulfide and a polyphenylsulfone, or a combination comprising at least one of the foregoing; and a mesoporous silicate having an average pore size of about 5 nanometers to about 50 nanometers. The composition has high-temperature elastomeric properties and excellent mechanical strength. The compositions are useful in oil and gas downhole applications. Methods for the manufacture of the composition and articles comprising the composition are also disclosed.
    Type: Grant
    Filed: April 3, 2014
    Date of Patent: April 5, 2016
    Assignee: BAKER HUGHES INCORPORATED
    Inventors: Sayantan Roy, Bennett M. Richard, Jeffrey R. Potts, Anil K. Sadana
  • Publication number: 20160077832
    Abstract: The present subject matter relates to size estimation of a plurality of user stories for agile software development. The plurality of user stories associated with a software may be obtained, and a base size for each of the plurality of user stories may be computed based on at least one basic parameter. The at least one basic parameter is indicative of a parameter affecting complexity associated with execution of a user story. Subsequently, an additional size for the plurality of user stories may be ascertained, based on at least one additional parameter. The at least one additional parameter is indicative of an environmental factor affecting delivery of the software. The overall size of the plurality of user stories is determined by consolidating the base size for each user story with the additional size for the plurality of user stories.
    Type: Application
    Filed: September 17, 2014
    Publication date: March 17, 2016
    Inventors: Pranabendu Bhattacharyya, Sharmila Das, Sayantan Roy