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).
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Patent number: 12589566Abstract: 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: GrantFiled: January 26, 2024Date of Patent: March 31, 2026Assignee: The Goodyear Tire & Rubber CompanyInventors: Robin Lamgaday, Adam Mark Baldan, Benjamin Isaiah Garn, Carl Trevor Ross Pulford, Dinesh Chandra, Cheng-Hsiung Lin
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Publication number: 20240262064Abstract: 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: ApplicationFiled: January 26, 2024Publication date: August 8, 2024Inventors: Robin Lamgaday, Adam Mark Baldan, Benjamin Isaiah Garn, Carl Trevor Ross Pulford, Dinesh Chandra, Cheng-Hsiung Lin
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Patent number: 11981169Abstract: 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: GrantFiled: September 4, 2019Date of Patent: May 14, 2024Assignee: THE GOODYEAR TIRE & RUBBER COMPANYInventors: Andreas Frantzen, Carolin Anna Welter, Anne Therese Peronnet-Paquin, Mingliang Du, Stephan Rodewald, Betul Buehler, Benjamin Isaiah Garn, Daniel Vojtko, Jungmee Kang, Dinesh Chandra
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Publication number: 20220169076Abstract: 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: ApplicationFiled: December 1, 2020Publication date: June 2, 2022Inventors: Dinesh Chandra, James Gregory Gillick
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Patent number: 11020921Abstract: 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: GrantFiled: September 13, 2017Date of Patent: June 1, 2021Assignee: The Goodyear Tire & Rubber CompanyInventors: Robin Lamgaday, Cheng-Hsiung Lin, Dinesh Chandra, Arun Kumar Byatarayanapura Gopala, Sagar Dilip Bafana
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Patent number: 10894452Abstract: 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: GrantFiled: November 14, 2017Date of Patent: January 19, 2021Assignee: The Goodyear Tire & Rubber CompanyInventors: Benjamin Isaiah Garn, Dinesh Chandra, Sagar Dilip Bafana, Cheng-Hsiung Lin, Daniel Vojtko
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Patent number: 10783958Abstract: 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: GrantFiled: April 19, 2019Date of Patent: September 22, 2020Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Dinesh Chandra, Eswararao Potladhurthi, Dhani Reddy Sreenivasula Reddy, Krishnan S. Rengarajan
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Patent number: 10783956Abstract: 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: GrantFiled: January 9, 2019Date of Patent: September 22, 2020Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Dinesh Chandra, Eswararao Potladhurthi, Dhani Reddy Sreenivasula Reddy, Krishnan S. Rengarajan
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Publication number: 20200009927Abstract: 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: ApplicationFiled: September 4, 2019Publication date: January 9, 2020Inventors: Andreas FRANTZEN, Carolin Anna WELTER, Anne Therese PERONNET-PAQUIN, Mingliang DU, Stephan RODEWALD, Betul BUEHLER, Benjamin Isaiah GARN, Daniel VOJTKO, Jungmee KANG, Dinesh CHANDRA
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Patent number: 10449813Abstract: 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: GrantFiled: January 26, 2017Date of Patent: October 22, 2019Assignee: The Goodyear Tire & Rubber CompanyInventors: Jungmee Kang, Byoung Jo Lee, Daniel Vojtko, Dinesh Chandra, Betul Buehler, Benjamin Isaiah Garn
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Publication number: 20190304536Abstract: 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: ApplicationFiled: April 19, 2019Publication date: October 3, 2019Inventors: Dinesh CHANDRA, Eswararao POTLADHURTHI, Dhani Reddy Sreenivasula REDDY, Krishnan S. RENGARAJAN
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Patent number: 10398792Abstract: A method of producing radiobacteria is provided, especially radiolisteria-32P. Compositions and methods of use thereof are also provided.Type: GrantFiled: October 19, 2015Date of Patent: September 3, 2019Assignee: Albert Einstein College of MedicineInventors: Claudia Gravekamp, Ekaterina Dadachova, Dinesh Chandra
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Patent number: 10319431Abstract: 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: GrantFiled: October 31, 2017Date of Patent: June 11, 2019Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Dinesh Chandra, Eswararao Potladhurthi, Dhani Reddy Sreenivasula Reddy, Krishnan S. Rengarajan
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Publication number: 20190147946Abstract: 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: ApplicationFiled: January 9, 2019Publication date: May 16, 2019Inventors: Dinesh CHANDRA, Eswararao POTLADHURTHI, Dhani Reddy Sreenivasula REDDY, Krishnan S. RENGARAJAN
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Patent number: 10217510Abstract: 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: GrantFiled: October 31, 2017Date of Patent: February 26, 2019Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Dinesh Chandra, Eswararao Potladhurthi, Dhani Reddy Sreenivasula Reddy, Krishnan S. Rengarajan
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Publication number: 20180294069Abstract: 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: ApplicationFiled: June 12, 2018Publication date: October 11, 2018Inventors: Frederic Gerard Auguste SIFFER, Jerome Bernard HOBELMAN, James Gregory GILLICK, Michael Lawrence GERSMAN, Dinesh CHANDRA, Dan QU, Bina Patel BOTTS
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Publication number: 20180294070Abstract: 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: ApplicationFiled: June 12, 2018Publication date: October 11, 2018Inventors: 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
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Publication number: 20180207680Abstract: 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: ApplicationFiled: December 19, 2017Publication date: July 26, 2018Inventors: Frederic Gerard Auguste SIFFER, Jerome Bernard HOBELMAN, James Gregory GILLICK, Michael Lawrence GERSMAN, Dinesh CHANDRA, Dan QU, Bina Patel BOTTS
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Publication number: 20180169699Abstract: 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: ApplicationFiled: December 19, 2017Publication date: June 21, 2018Inventors: 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
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Patent number: 9984742Abstract: 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: GrantFiled: April 13, 2016Date of Patent: May 29, 2018Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Dinesh Chandra, Eswararao Potladhurthi, Dhani Reddy Sreenivasula Reddy, Krishnan S. Rengarajan