Patents by Inventor Dinesh Chandra

Dinesh Chandra 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: 12589566
    Abstract: In one aspect, the invention is directed to a method of providing an air barrier layer to a tire comprising at least the following steps: providing a tire comprising a tire cavity and an inner surface facing the tire cavity, providing a tubular film with at least one open end, and molding at least a portion of the tubular film to form an air barrier layer adapted to the inner surface of the tire. In another aspect, a cured tire is provided which comprises a tire cavity and an inner surface facing the tire cavity, and a tubular film of molten polymer is extruded. Said film is inserted into the tire cavity of the cured tire and expanded in the tire cavity to form an air barrier layer adapted to an inner surface of the tire.
    Type: Grant
    Filed: January 26, 2024
    Date of Patent: March 31, 2026
    Assignee: The Goodyear Tire & Rubber Company
    Inventors: Robin Lamgaday, Adam Mark Baldan, Benjamin Isaiah Garn, Carl Trevor Ross Pulford, Dinesh Chandra, Cheng-Hsiung Lin
  • Publication number: 20240262064
    Abstract: In one aspect, the invention is directed to a method of providing an air barrier layer to a tire comprising at least the following steps: providing a tire comprising a tire cavity and an inner surface facing the tire cavity, providing a tubular film with at least one open end, and molding at least a portion of the tubular film to form an air barrier layer adapted to the inner surface of the tire. In another aspect, a cured tire is provided which comprises a tire cavity and an inner surface facing the tire cavity, and a tubular film of molten polymer is extruded. Said film is inserted into the tire cavity of the cured tire and expanded in the tire cavity to form an air barrier layer adapted to an inner surface of the tire.
    Type: Application
    Filed: January 26, 2024
    Publication date: August 8, 2024
    Inventors: Robin Lamgaday, Adam Mark Baldan, Benjamin Isaiah Garn, Carl Trevor Ross Pulford, Dinesh Chandra, Cheng-Hsiung Lin
  • Patent number: 11981169
    Abstract: A self-inflating tire assembly includes an air tube mounted within a tire sidewall groove. The air tube is in contacting engagement with opposite angled groove surfaces surrounding the air tube. A segment of the air tube is flattened from an expanded diameter to a flat diameter by bending and compression of the groove in a rolling tire footprint to force air evacuated from the flattened segment along a tube air passageway. The sidewall groove extends into an annular, axially extending, sidewall surface such as an axially oriented surface of a tire chafer protrusion located in non-contacting relationship with the rim. The air tube is extruded from a rubber composition, the rubber composition comprising: a diene based rubber; from 0.
    Type: Grant
    Filed: September 4, 2019
    Date of Patent: May 14, 2024
    Assignee: THE GOODYEAR TIRE & RUBBER COMPANY
    Inventors: Andreas Frantzen, Carolin Anna Welter, Anne Therese Peronnet-Paquin, Mingliang Du, Stephan Rodewald, Betul Buehler, Benjamin Isaiah Garn, Daniel Vojtko, Jungmee Kang, Dinesh Chandra
  • Publication number: 20220169076
    Abstract: The present invention is directed to a pneumatic tire comprising a carcass and an innerliner in direct contact with the carcass, the innerliner comprising a film comprising an ethylene vinyl alcohol copolymer; and an adhesive layer disposed between the film and the carcass, the adhesive layer comprising a resorcinol-formaldehyde-latex (RFL) adhesive.
    Type: Application
    Filed: December 1, 2020
    Publication date: June 2, 2022
    Inventors: Dinesh Chandra, James Gregory Gillick
  • Patent number: 11020921
    Abstract: A connecting member and method of forming the connecting member in an air maintenance tire is provided. The method includes providing a tire having a sidewall formed with an annular groove. The groove receives an annular air tube having a first end with a first fitting and a second end with a second fitting. A recess is formed in the tire sidewall along the annular groove at a location where the first end of the annular air tube is adjacent the second end of the annular air tube. A mold formed with a cavity is provided and the fittings are removably secured in the cavity. The mold is positioned on a surface of the tire sidewall and an elastomer or a polymer is introduced into the mold cavity. The mold is heated to form the connecting member on the tire sidewall.
    Type: Grant
    Filed: September 13, 2017
    Date of Patent: June 1, 2021
    Assignee: The Goodyear Tire & Rubber Company
    Inventors: Robin Lamgaday, Cheng-Hsiung Lin, Dinesh Chandra, Arun Kumar Byatarayanapura Gopala, Sagar Dilip Bafana
  • Patent number: 10894452
    Abstract: A mounting member for an air maintenance tire is provided. The tire includes a sidewall that is formed with a groove for receiving an air tube and a recess for receiving at least one pneumatic connector that is in fluid communication with the air tube. The mounting member includes a plurality of layers, in which the layers are in stacked alignment with one another. The plurality of layers includes at least an axially outward layer and an axially inward layer. The mounting member is received in the recess and secured to the tire sidewall, thereby securing the position of the at least one pneumatic connector. A method of forming a mounting member for an air maintenance tire is also provided.
    Type: Grant
    Filed: November 14, 2017
    Date of Patent: January 19, 2021
    Assignee: The Goodyear Tire & Rubber Company
    Inventors: Benjamin Isaiah Garn, Dinesh Chandra, Sagar Dilip Bafana, Cheng-Hsiung Lin, Daniel Vojtko
  • Patent number: 10783958
    Abstract: An apparatus and method are provided for implementing write assist with boost attenuation for static random access memory (SRAM) arrays. The apparatus includes a memory array comprising a plurality of SRAM cells. The apparatus further includes a write driver connected to each of a differential pair of bit lines in each of the plurality of SRAM cells of the memory array. The apparatus further includes a write assist attenuation circuit connected to the write driver, the write assist attenuation circuit comprising a clamping device configured to modify a control signal as a function of supply voltage and process to attenuate an amount of boost applied to pull one of the bit lines below ground in an active phase of a write cycle.
    Type: Grant
    Filed: April 19, 2019
    Date of Patent: September 22, 2020
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Dinesh Chandra, Eswararao Potladhurthi, Dhani Reddy Sreenivasula Reddy, Krishnan S. Rengarajan
  • Patent number: 10783956
    Abstract: An apparatus and method are provided for implementing write assist with boost attenuation for static random access memory (SRAM) arrays. The apparatus includes a memory array comprising a plurality of SRAM cells. The apparatus further includes a write driver connected to each of a differential pair of bit lines in each of the plurality of SRAM cells of the memory array. The apparatus further includes a write assist attenuation circuit connected to the write driver, the write assist attenuation circuit comprising a clamping device configured to modify a control signal as a function of supply voltage and process to attenuate an amount of boost applied to pull one of the bit lines below ground in an active phase of a write cycle.
    Type: Grant
    Filed: January 9, 2019
    Date of Patent: September 22, 2020
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Dinesh Chandra, Eswararao Potladhurthi, Dhani Reddy Sreenivasula Reddy, Krishnan S. Rengarajan
  • Publication number: 20200009927
    Abstract: A self-inflating tire assembly includes an air tube mounted within a tire sidewall groove. The air tube is in contacting engagement with opposite angled groove surfaces surrounding the air tube. A segment of the air tube is flattened from an expanded diameter to a flat diameter by bending and compression of the groove in a rolling tire footprint to force air evacuated from the flattened segment along a tube air passageway. The sidewall groove extends into an annular, axially extending, sidewall surface such as an axially oriented surface of a tire chafer protrusion located in non-contacting relationship with the rim. The air tube is extruded from a rubber composition, the rubber composition comprising: a diene based rubber; from 0.
    Type: Application
    Filed: September 4, 2019
    Publication date: January 9, 2020
    Inventors: Andreas FRANTZEN, Carolin Anna WELTER, Anne Therese PERONNET-PAQUIN, Mingliang DU, Stephan RODEWALD, Betul BUEHLER, Benjamin Isaiah GARN, Daniel VOJTKO, Jungmee KANG, Dinesh CHANDRA
  • Patent number: 10449813
    Abstract: A self-inflating tire assembly includes an air tube mounted within a tire sidewall or chafer groove. The air tube is in contacting engagement with opposite angled groove surfaces surrounding the air tube. A segment of the air tube is flattened from an expanded diameter to a flat diameter by bending and compression of the groove in a rolling tire footprint to force air evacuated from the flattened segment along a tube air passageway. A coverstrip overlays and seals the groove and provides an abrasion resistant surface on the exterior of the tire. The coverstrip is made from a vulcanizable rubber composition comprising from 50 to 80 phr of a polybutadiene, from 50 to 20 phr of natural rubber, and from 0.1 to 5 phr of a vulcanization modifier.
    Type: Grant
    Filed: January 26, 2017
    Date of Patent: October 22, 2019
    Assignee: The Goodyear Tire & Rubber Company
    Inventors: Jungmee Kang, Byoung Jo Lee, Daniel Vojtko, Dinesh Chandra, Betul Buehler, Benjamin Isaiah Garn
  • Publication number: 20190304536
    Abstract: An apparatus and method are provided for implementing write assist with boost attenuation for static random access memory (SRAM) arrays. The apparatus includes a memory array comprising a plurality of SRAM cells. The apparatus further includes a write driver connected to each of a differential pair of bit lines in each of the plurality of SRAM cells of the memory array. The apparatus further includes a write assist attenuation circuit connected to the write driver, the write assist attenuation circuit comprising a clamping device configured to modify a control signal as a function of supply voltage and process to attenuate an amount of boost applied to pull one of the bit lines below ground in an active phase of a write cycle.
    Type: Application
    Filed: April 19, 2019
    Publication date: October 3, 2019
    Inventors: Dinesh CHANDRA, Eswararao POTLADHURTHI, Dhani Reddy Sreenivasula REDDY, Krishnan S. RENGARAJAN
  • Patent number: 10398792
    Abstract: A method of producing radiobacteria is provided, especially radiolisteria-32P. Compositions and methods of use thereof are also provided.
    Type: Grant
    Filed: October 19, 2015
    Date of Patent: September 3, 2019
    Assignee: Albert Einstein College of Medicine
    Inventors: Claudia Gravekamp, Ekaterina Dadachova, Dinesh Chandra
  • Patent number: 10319431
    Abstract: An apparatus and method are provided for implementing write assist with boost attenuation for static random access memory (SRAM) arrays. The apparatus includes a memory array comprising a plurality of SRAM cells. The apparatus further includes a write driver connected to each of a differential pair of bit lines in each of the plurality of SRAM cells of the memory array. The apparatus further includes a write assist attenuation circuit connected to the write driver, the write assist attenuation circuit comprising a clamping device configured to modify a control signal as a function of supply voltage and process to attenuate an amount of boost applied to pull one of the bit lines below ground in an active phase of a write cycle.
    Type: Grant
    Filed: October 31, 2017
    Date of Patent: June 11, 2019
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Dinesh Chandra, Eswararao Potladhurthi, Dhani Reddy Sreenivasula Reddy, Krishnan S. Rengarajan
  • Publication number: 20190147946
    Abstract: An apparatus and method are provided for implementing write assist with boost attenuation for static random access memory (SRAM) arrays. The apparatus includes a memory array comprising a plurality of SRAM cells. The apparatus further includes a write driver connected to each of a differential pair of bit lines in each of the plurality of SRAM cells of the memory array. The apparatus further includes a write assist attenuation circuit connected to the write driver, the write assist attenuation circuit comprising a clamping device configured to modify a control signal as a function of supply voltage and process to attenuate an amount of boost applied to pull one of the bit lines below ground in an active phase of a write cycle.
    Type: Application
    Filed: January 9, 2019
    Publication date: May 16, 2019
    Inventors: Dinesh CHANDRA, Eswararao POTLADHURTHI, Dhani Reddy Sreenivasula REDDY, Krishnan S. RENGARAJAN
  • Patent number: 10217510
    Abstract: An apparatus and method are provided for implementing write assist with boost attenuation for static random access memory (SRAM) arrays. The apparatus includes a memory array comprising a plurality of SRAM cells. The apparatus further includes a write driver connected to each of a differential pair of bit lines in each of the plurality of SRAM cells of the memory array. The apparatus further includes a write assist attenuation circuit connected to the write driver, the write assist attenuation circuit comprising a clamping device configured to modify a control signal as a function of supply voltage and process to attenuate an amount of boost applied to pull one of the bit lines below ground in an active phase of a write cycle.
    Type: Grant
    Filed: October 31, 2017
    Date of Patent: February 26, 2019
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Dinesh Chandra, Eswararao Potladhurthi, Dhani Reddy Sreenivasula Reddy, Krishnan S. Rengarajan
  • Publication number: 20180294069
    Abstract: The present invention is directed to A method of making a cord-reinforced rubber article, comprising the steps of A) mixing a carrier gas, sulfur and an alkyne, to form a gas mixture; B) generating an atmospheric pressure plasma from the gas mixture; C) exposing a reinforcement cord to the atmospheric pressure plasma to produce a coated reinforcement cord; and D) contacting the coated reinforcement cord with a rubber composition comprising a diene based elastomer.
    Type: Application
    Filed: June 12, 2018
    Publication date: October 11, 2018
    Inventors: Frederic Gerard Auguste SIFFER, Jerome Bernard HOBELMAN, James Gregory GILLICK, Michael Lawrence GERSMAN, Dinesh CHANDRA, Dan QU, Bina Patel BOTTS
  • Publication number: 20180294070
    Abstract: The present invention is directed to a method of making a cord-reinforced rubber article, comprising the steps of A) mixing a carrier gas, a sulfur-containing compound and an alkyne, to form a gas mixture; B) generating an atmospheric pressure plasma from the gas mixture; C) exposing a reinforcement cord to the atmospheric pressure plasma to produce a coated reinforcement cord; and D) contacting the coated reinforcement cord with a rubber composition comprising a diene based elastomer.
    Type: Application
    Filed: June 12, 2018
    Publication date: October 11, 2018
    Inventors: Frederic Gerard Auguste SIFFER, Jerome Bernard HOBELMAN, James Gregory GILLICK, Michael Lawrence GERSMAN, Dinesh CHANDRA, Dan QU, Bina Patel BOTTS, Dirk Leo VANGENEUGDEN, Bert VERHEYDE, Erwin Constant Maria VAN HOOF
  • Publication number: 20180207680
    Abstract: The present invention is directed to a method of making a cord-reinforced rubber article, comprising the steps of A) mixing a carrier gas, sulfur and an alkyne, to form a gas mixture; B) generating an atmospheric pressure plasma from the gas mixture; C) exposing a steel reinforcement cord to the atmospheric pressure plasma to produce a treated reinforcement cord; and D) contacting the treated steel reinforcement cord with a rubber composition comprising a diene based elastomer.
    Type: Application
    Filed: December 19, 2017
    Publication date: July 26, 2018
    Inventors: Frederic Gerard Auguste SIFFER, Jerome Bernard HOBELMAN, James Gregory GILLICK, Michael Lawrence GERSMAN, Dinesh CHANDRA, Dan QU, Bina Patel BOTTS
  • Publication number: 20180169699
    Abstract: The present invention is directed to a method of making a cord-reinforced rubber article, comprising the steps of A) mixing a carrier gas, a sulfur-containing compound and an alkyne, to form a gas mixture; B) generating an atmospheric pressure plasma from the gas mixture; C) exposing a reinforcement cord to the atmospheric pressure plasma to produce a treated reinforcement cord; and D) contacting the treated reinforcement cord with a rubber composition comprising a diene based elastomer.
    Type: Application
    Filed: December 19, 2017
    Publication date: June 21, 2018
    Inventors: Frederic Gerard Auguste SIFFER, Jerome Bernard HOBELMAN, James Gregory GILLICK, Michael Lawrence GERSMAN, Dinesh CHANDRA, Dan QU, Bina Patel BOTTS, Dirk VANGENEUGDEN, Bert VERHEYDE, Erwin VAN HOOF
  • Patent number: 9984742
    Abstract: An apparatus and method are provided for implementing write assist with boost attenuation for static random access memory (SRAM) arrays. The apparatus includes a memory array comprising a plurality of SRAM cells. The apparatus further includes a write driver connected to each of a differential pair of bit lines in each of the plurality of SRAM cells of the memory array. The apparatus further includes a write assist attenuation circuit connected to the write driver, the write assist attenuation circuit comprising a clamping device configured to modify a control signal as a function of supply voltage and process to attenuate an amount of boost applied to pull one of the bit lines below ground in an active phase of a write cycle.
    Type: Grant
    Filed: April 13, 2016
    Date of Patent: May 29, 2018
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Dinesh Chandra, Eswararao Potladhurthi, Dhani Reddy Sreenivasula Reddy, Krishnan S. Rengarajan