Patents by Inventor Dhaval A. Doshi

Dhaval A. Doshi 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: 11692081
    Abstract: Core particles produced in situ or introduced as preformed core particles are coated with a layer of carbon. Non-carbon as well as some carbon-based core materials can be utilized. The resulting carbon coated particles can find applications in rubber products, for instance as reinforcement for tire components.
    Type: Grant
    Filed: November 5, 2021
    Date of Patent: July 4, 2023
    Assignee: Cabot Corporation
    Inventors: David M. Matheu, Theis F. Clarke, David S. Crocker, Frederick H. Rumpf, David C. Reynolds, Dhaval A. Doshi, Martin C. Green
  • Publication number: 20230159724
    Abstract: Elastomeric compositions are described that include at least one filler that are carbon nanostructures or fragments thereof. Methods to prepare elastomeric compositions are further described. Loadings of the carbon nanostructures can be from about 0.1 phr to about 50 phr or a volume fraction of from about 0.1 vol % to about 20 vol %.
    Type: Application
    Filed: April 16, 2021
    Publication date: May 25, 2023
    Inventors: Limeng Chen, Jiaxi Li, Agathagelos Kyrlidis, Dhaval A. Doshi, Ping Zhang
  • Publication number: 20220332016
    Abstract: Disclosed herein are methods of preparing composites from solid elastomer(s) and wet filler(s), as well as products, including composites, vulcanizates, and articles therefrom. The wet filler can have a liquid content of at least 15%. A resulting composite comprises the filler dispersed in the elastomer at a loading of at least 20 phr with a filler yield loss of no more than 10%, wherein the composite has a liquid content of no more than 10% by weight based on total weight of said composite.
    Type: Application
    Filed: June 4, 2020
    Publication date: October 20, 2022
    Inventors: Yakov E. Kutsovsky, Martin C. Green, Ping Zhang, Dhaval A. Doshi, Jiaxi Li, Michael D. Morris, Brian N. Hult, Ralph E. Dickinson, Irina S. Yurovskaya, Frederick H. Rumpf, Satyan Choudhary, Hassan M. Ali, Ani T. Nikova, Jincheng Xiong, Michael Beaulieu
  • Publication number: 20220056241
    Abstract: Core particles produced in situ or introduced as preformed core particles are coated with a layer of carbon. Non-carbon as well as some carbon-based core materials can be utilized. The resulting carbon coated particles can find applications in rubber products, for instance as reinforcement for tire components.
    Type: Application
    Filed: November 5, 2021
    Publication date: February 24, 2022
    Inventors: David M. Matheu, Theis F. Clarke, David S. Crocker, Frederick H. Rumpf, David C. Reynolds, Dhaval A. Doshi, Martin C. Green
  • Patent number: 11198774
    Abstract: Core particles produced in situ or introduced as preformed core particles are coated with a layer of carbon. Non-carbon as well as some carbon-based core materials can be utilized. The resulting carbon coated particles can find applications in rubber products, for instance as reinforcement for tire components.
    Type: Grant
    Filed: November 23, 2019
    Date of Patent: December 14, 2021
    Assignee: Cabot Corporation
    Inventors: David M. Matheu, Theis F. Clarke, David S. Crocker, Frederick H. Rumpf, David C. Reynolds, Dhaval A. Doshi, Martin C. Green
  • Patent number: 10927261
    Abstract: Carbon blacks such as reinforcing-grade carbon blacks with high structure are described. The carbon black can have the following properties: a statistical thickness surface area (STSA) ranging from 80 m2/g to 150 m2/g, an oil absorption number (OAN) of at least 180 mL/100 g, and a crushed oil absorption number (COAN) of at least 110 mL/100 g. Rubber compounds which incorporate the carbon black also are described.
    Type: Grant
    Filed: April 27, 2018
    Date of Patent: February 23, 2021
    Assignee: Cabot Corporation
    Inventors: Jaesun Choi, Theis F. Clarke, Dhaval A. Doshi
  • Publication number: 20200190288
    Abstract: Core particles produced in situ or introduced as preformed core particles are coated with a layer of carbon. Non-carbon as well as some carbon-based core materials can be utilized. The resulting carbon coated particles can find applications in rubber products, for instance as reinforcement for tire components.
    Type: Application
    Filed: November 23, 2019
    Publication date: June 18, 2020
    Inventors: David M. Matheu, Theis F. Clarke, David S. Crocker, Frederick H. Rumpf, David C. Reynolds, Dhaval A. Doshi, Martin C. Green
  • Patent number: 10519298
    Abstract: Core particles produced in situ or introduced as preformed core particles are coated with a layer of carbon. Non-carbon as well as some carbon-based core materials can be utilized. The resulting carbon coated particles can find applications in rubber products, for instance as reinforcement for tire components.
    Type: Grant
    Filed: April 27, 2016
    Date of Patent: December 31, 2019
    Assignee: Cabot Corporation
    Inventors: David M. Matheu, Theis Clarke, David Scott Crocker, Frederick H. Rumpf, David C. Reynolds, Dhaval Doshi, Martin C. Green
  • Publication number: 20180319992
    Abstract: Carbon blacks such as reinforcing-grade carbon blacks with high structure are described. The carbon black can have the following properties: a statistical thickness surface area (STSA) ranging from 80 m2/g to 150 m2/g, an oil absorption number (OAN) of at least 180 mL/100 g, and a crushed oil absorption number (COAN) of at least 110 mL/100 g. Rubber compounds which incorporate the carbon black also are described.
    Type: Application
    Filed: April 27, 2018
    Publication date: November 8, 2018
    Inventors: Jaesun Choi, Theis F. Clarke, Dhaval A. Doshi
  • Patent number: 9975270
    Abstract: Method for manufacturing an aerogel-containing composite, said method comprising the steps of: providing fibers, at least some of which are first fibers, such as mineral fibers, polymer fibers, cellulose fibers, or other types of fibers, in an amount of from 3 to 80 wt % of the total weight of starting materials, providing an aerogel particulate material in an amount of from 10 to 75 wt % of the total weight of starting materials, providing a binder in an amount of from 1 to 30 wt % of the total weight of starting materials, suspending the fibers in a primary air flow and suspending the aerogel particulate material in the primary air flow, thereby mixing the suspended aerogel particulate material with the suspended fibers, mixing the binder with the fibers and/or aerogel particulate material before, during or after mixing of the fibers with the aerogel particulate material, collecting the mixture of fibers, aerogel particulate material and binder and pressing and curing the mixture to provide a consolidated c
    Type: Grant
    Filed: July 29, 2011
    Date of Patent: May 22, 2018
    Assignee: Rockwool International A/S
    Inventors: Kenn Christensen, Gorm Rosenberg, Ulrich Bauer, Dhaval Doshi, Elmar Pothmann
  • Patent number: 9969856
    Abstract: Composites, such as syntactic foams, are described. The composite contains at least one polymer and at least one aerogel. The aerogel is coated with a coating substance to at least substantially prevent the intrusion of the polymer into the pores of the aerogel. Methods of making the composite are also described, as well as uses of the composite.
    Type: Grant
    Filed: April 18, 2008
    Date of Patent: May 15, 2018
    Assignee: Cabot Corporation
    Inventors: Jameel Menashi, Ulrich Bauer, Elmar Pothmann, Andrew A. Peterson, Anna K. Wilkins, Mihai Anton, Dhaval A. Doshi, William H. Dalzell
  • Publication number: 20170101773
    Abstract: A flexible insulating structure includes a batting and a mixture of aerogel-containing particles and a binder, the aerogel-containing particles impregnating at least one layer of the batting. A method for preparing a flexible insulating structure comprises applying a mixture including aerogel-containing particles and a binder to a batting having one or more batting layers; and drying or allowing the binder to dry, thereby forming the flexible insulating structure.
    Type: Application
    Filed: December 21, 2016
    Publication date: April 13, 2017
    Inventors: Dhaval A. Doshi, Catherine M. Norwood
  • Publication number: 20160319110
    Abstract: Core particles produced in situ or introduced as preformed core particles are coated with a layer of carbon. Non-carbon as well as some carbon-based core materials can be utilized. The resulting carbon coated particles can find applications in rubber products, for instance as reinforcement for tire components.
    Type: Application
    Filed: April 27, 2016
    Publication date: November 3, 2016
    Inventors: David M. Matheu, Theis Clarke, David Scott Crocker, Frederick H. Rumpf, David C. Reynolds, Dhaval Doshi, Martin C. Green
  • Patent number: 9284419
    Abstract: The present invention relates to a method of preparing polymer compositions comprising modified metal oxides in a polymer wherein a nanoparticle dispersion of a metal oxide in a non-aqueous solvent is combined with at least one coupling agent to form a nanoparticle dispersion of a modified metal oxide in the non-aqueous solvent. The nanoparticle dispersion is then combined with a polymer followed by the removal of the non-aqueous solvent or, alternatively, combined with a monomer, which is polymerized to form the polymer and removal of the solvent, in any order. Also disclosed are polymer compositions prepared by this method.
    Type: Grant
    Filed: February 25, 2010
    Date of Patent: March 15, 2016
    Assignee: Cabot Corporation
    Inventors: Dhaval A. Doshi, Zhifeng Li
  • Publication number: 20160032584
    Abstract: Composites such as self-supporting rigid composites that include aerogel have low thermal conductivity and attractive mechanical properties. Methods for preparing such composites include, for example, combining an aerogel-containing material with a binder to form a slurry and allowing the slurry to harden. At least part of the hardening process in conducted under compression.
    Type: Application
    Filed: August 10, 2015
    Publication date: February 4, 2016
    Inventors: Dhaval A. Doshi, Thomas M. Miller, Joshua H. Chase, Catherine M. Norwood
  • Patent number: 9115025
    Abstract: Compositions include an aerogel component and have low thermal conductivity. Methods for preparing slurries or composites include, for example combining the aerogel component with a surfactant, binder and other ingredients, such as, for instance, fibers. The compositions can be slurries that can be used in coating applications or self supporting rigid composites.
    Type: Grant
    Filed: April 23, 2010
    Date of Patent: August 25, 2015
    Assignee: ROCKWOOL INTERNATIONAL A/S
    Inventors: Ulrich Bauer, Dhaval A. Doshi
  • Publication number: 20140087119
    Abstract: Method for manufacturing an aerogel-containing composite, said method comprising the steps of: providing fibres, at least some of which are first fibres, such as mineral fibres, polymer fibres, cellulose fibres, or other types of fibres, in an amount of from 3 to 80 wt % of the total weight of starting materials, providing an aerogel particulate material in an amount of from 10 to 75 wt % of the total weight of starting materials, providing a binder in an amount of from 1 to 30 wt % of the total weight of starting materials, suspending the fibres in a primary air flow and suspending the aerogel particulate material in the primary air flow, thereby mixing the suspended aerogel particulate material with the suspended fibres, mixing the binder with the fibres and/or aerogel particulate material before, during or after mixing of the fibres with the aerogel particulate material, collecting the mixture of fibres, aerogel particulate material and binder and pressing and curing the mixture to provide a consolidated c
    Type: Application
    Filed: July 29, 2011
    Publication date: March 27, 2014
    Applicant: Rockwool International A/S
    Inventors: Kenn Christensen, Gorm Rosenberg, Ulrich Bauer, Dhaval Doshi, Elmar Pothmann
  • Publication number: 20130344279
    Abstract: A flexible insulating structure includes a batting and a mixture of aerogel-containing particles and a binder, the aerogel-containing particles impregnating at least one layer of the batting. A method for preparing a flexible insulating structure comprises applying a mixture including aerogel-containing particles and a binder to a batting having one or more batting layers; and drying or allowing the binder to dry, thereby forming the flexible insulating structure.
    Type: Application
    Filed: June 24, 2013
    Publication date: December 26, 2013
    Inventors: Dhaval A. Doshi, Catherine M. Norwood
  • Publication number: 20130119294
    Abstract: Method for manufacturing an aerogel-containing composite, said method comprising the steps of: providing fibres, at least some of which are first fibres, such as mineral fibres, polymer fibres, cellulose fibres, or other types of fibres, in an amount of from 3 to 80 wt % of the total weight of starting materials, providing an aerogel particulate material in an amount of from 10 to 75 wt % of the total weight of starting materials, providing a binder in an amount of from 1 to 30 wt % of the total weight of starting materials, suspending the fibres in a primary air flow and suspending the aerogel particulate material in the primary air flow, thereby mixing the suspended aerogel particulate material with the suspended fibres, mixing the binder with the fibres and/or aerogel particulate material before, during or after mixing of the fibres with the aerogel particulate material, providing a filler, such as a fire retardant, in an amount of 1 to 55 wt of the total weight of starting materials, adding the filler at
    Type: Application
    Filed: July 29, 2011
    Publication date: May 16, 2013
    Applicant: Rockwool International A/S
    Inventors: Kenn Christensen, Kristian Skovgaard Jorgensen, Gorm Rosenberg, Ulrich Bauer, Dhaval Doshi, Elmar Pothmann
  • Publication number: 20120097907
    Abstract: Compositions include an aerogel component and have low thermal conductivity. Methods for preparing slurries or composites include, for example combining the aerogel component with a surfactant, binder and other ingredients, such as, for instance, fibers. The compositions can be slurries that can be used in coating applications or self supporting rigid composites.
    Type: Application
    Filed: April 23, 2010
    Publication date: April 26, 2012
    Inventors: Ulrich Bauer, Dhaval A. Doshi