Patents by Inventor Malay Nandi

Malay Nandi 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: 11938691
    Abstract: A system for manufacturing a thermoplastic prepreg product includes a belt or conveyor, a prepreg applicator that positions a thermoplastic prepreg atop the belt or conveyor, a foam applicator that applies a foam mixture atop the thermoplastic prepreg, a heating mechanism that heats the thermoplastic prepreg and the foam mixture to cause the foam mixture to react atop the thermoplastic prepreg, and a laminator that is configured to press the thermoplastic prepreg and foam mixture to control a thickness of the resulting thermoplastic prepreg product. The thermoplastic prepreg includes a fabric, mat, or web of fibers and a thermoplastic material that is impregnated within the fabric, mat, or web of fibers. The thermoplastic material is formed from in situ polymerization of monomers and oligomers. The foam mixture includes an isocyanate, a polyol blend, and a blowing agent.
    Type: Grant
    Filed: November 2, 2022
    Date of Patent: March 26, 2024
    Assignee: Johns Manville
    Inventors: Malay Nandi, Mingfu Zhang, Lance Wang, Jawed Asrar
  • Publication number: 20230066342
    Abstract: A system for manufacturing a thermoplastic prepreg product includes a belt or conveyor, a prepreg applicator that positions a thermoplastic prepreg atop the belt or conveyor, a foam applicator that applies a foam mixture atop the thermoplastic prepreg, a heating mechanism that heats the thermoplastic prepreg and the foam mixture to cause the foam mixture to react atop the thermoplastic prepreg, and a laminator that is configured to press the thermoplastic prepreg and foam mixture to control a thickness of the resulting thermoplastic prepreg product. The thermoplastic prepreg includes a fabric, mat, or web of fibers and a thermoplastic material that is impregnated within the fabric, mat, or web of fibers. The thermoplastic material is formed from in situ polymerization of monomers and oligomers. The foam mixture includes an isocyanate, a polyol blend, and a blowing agent.
    Type: Application
    Filed: November 2, 2022
    Publication date: March 2, 2023
    Inventors: Malay Nandi, Mingfu Zhang, Lance Wang, Jawed Asrar
  • Patent number: 11518119
    Abstract: A system for manufacturing a thermoplastic prepreg product includes a belt or conveyor, a prepreg applicator that positions a thermoplastic prepreg atop the belt or conveyor, a foam applicator that applies a foam mixture atop the thermoplastic prepreg, a heating mechanism that heats the thermoplastic prepreg and the foam mixture to cause the foam mixture to react atop the thermoplastic prepreg, and a laminator that is configured to press the thermoplastic prepreg and foam mixture to control a thickness of the resulting thermoplastic prepreg product. The thermoplastic prepreg includes a fabric, mat, or web of fibers and a thermoplastic material that is impregnated within the fabric, mat, or web of fibers. The thermoplastic material is formed from in situ polymerization of monomers and oligomers. The foam mixture includes an isocyanate, a polyol blend, and a blowing agent.
    Type: Grant
    Filed: March 30, 2020
    Date of Patent: December 6, 2022
    Assignee: Johns Manville
    Inventors: Malay Nandi, Mingfu Zhang, Lance Wang, Jawed Asrar
  • Publication number: 20220186491
    Abstract: A polyisocyanurate foam insulation product is produced from an isocyanate component and a polyol-containing component including a blowing agent. The polyol-containing component comprises one or more polyols, a fire retardant, and a hydroxyl-containing low-molecular-weight additive effective to increase the R-value per inch of the insulation product as measured at 40° F., as compared with an otherwise-identical formulation lacking the hydroxyl-containing low-molecular-weight additive. The polyisocyanurate foam insulation product may have an R-value per inch of at least 6.0 when measured at 40° F. and may have an R-value per inch of at least 5.5 when measured at 25° F. Suitable hydroxyl-containing low-molecular-weight additives may include triethanolamine, trimethylolpropane, N-methyldiethanolamine, 1,4 butanediol, or another suitable multi-functional alcohol or combination of multi-functional alcohols.
    Type: Application
    Filed: March 7, 2022
    Publication date: June 16, 2022
    Inventors: Malay Nandi, Lance Wang, Jawed Asrar
  • Patent number: 11299882
    Abstract: A polyisocyanurate foam insulation product is produced from an isocyanate component and a polyol-containing component including a blowing agent. The polyol-containing component comprises one or more polyols, a fire retardant, and a hydroxyl-containing low-molecular-weight additive effective to increase the R-value per inch of the insulation product as measured at 40° F., as compared with an otherwise-identical formulation lacking the hydroxyl-containing low-molecular-weight additive. The polyisocyanurate foam insulation product may have an R-value per inch of at least 6.0 when measured at 40° F. and may have an R-value per inch of at least 5.5 when measured at 25° F. Suitable hydroxyl-containing low-molecular-weight additives may include triethanolamine, trimethylolpropane, N-methyldiethanolamine, 1,4 butanediol, or another suitable multi-functional alcohol or combination of multi-functional alcohols.
    Type: Grant
    Filed: December 3, 2018
    Date of Patent: April 12, 2022
    Assignee: Johns Manville
    Inventors: Malay Nandi, Lance Wang, Jawed Asrar
  • Patent number: 11299885
    Abstract: An insulative construction product includes a polyurethane foam core and a mixture of Aerogel and carbon black that is disposed within the polyurethane foam core. The mixture of Aerogel and carbon black includes between 90 and 99 weight percent Aerogel and between 1 and 10 weight percent carbon black. The polyurethane foam core includes between 10 and 90 percent by volume of the of Aerogel and carbon black mixture and the construction product has an R-value of at least 8.0 R/inch.
    Type: Grant
    Filed: March 17, 2020
    Date of Patent: April 12, 2022
    Assignee: Johns Manville
    Inventors: Guodong Zheng, Luke S Weith, Malay Nandi, Lance Wang, Jawed Asrar
  • Publication number: 20210299978
    Abstract: A system for manufacturing a thermoplastic prepreg product includes a belt or conveyor, a prepreg applicator that positions a thermoplastic prepreg atop the belt or conveyor, a foam applicator that applies a foam mixture atop the thermoplastic prepreg, a heating mechanism that heats the thermoplastic prepreg and the foam mixture to cause the foam mixture to react atop the thermoplastic prepreg, and a laminator that is configured to press the thermoplastic prepreg and foam mixture to control a thickness of the resulting thermoplastic prepreg product. The thermoplastic prepreg includes a fabric, mat, or web of fibers and a thermoplastic material that is impregnated within the fabric, mat, or web of fibers. The thermoplastic material is formed from in situ polymerization of monomers and oligomers. The foam mixture includes an isocyanate, a polyol blend, and a blowing agent.
    Type: Application
    Filed: March 30, 2020
    Publication date: September 30, 2021
    Inventors: Malay Nandi, Mingfu Zhang, Lance Wang, Jawed Asrar
  • Patent number: 10914071
    Abstract: A construction product described herein includes a fiber core that includes a plurality of entangled glass fibers. The fiber core also includes a binder that bonds the plurality of entangled glass fibers together and an Aerogel material that is homogenously or uniformly disposed within the fiber core. In some instances, the fiber core includes between 40 and 80 weight percent of the Aerogel material. The construction product has an R-value of at least 6.5 per inch, a flame spread index of no greater than 5, and a smoke development index of no greater than 20 as measured according to the ASTM E-84 tunnel test.
    Type: Grant
    Filed: October 21, 2019
    Date of Patent: February 9, 2021
    Assignee: Johns Manville
    Inventors: Guodong Zheng, Luke S Weith, Malay Nandi, Lance Wang, Jawed Asrar
  • Patent number: 10913235
    Abstract: A polyisocyanurate foam insulation product is produced from an isocyanate component, a polyol-containing component, and a blowing agent. The polyol-containing component includes a first polyol and a second polyol, a fire retardant, and one or more surfactants, wherein the first polyol and the second polyol have different hydroxyl numbers, or have different functionalities, or differ in both hydroxyl number and functionality. In some formulations, the polylol-containing component may include a fire retardant, a metallo-organinc compound, or combinations thereof. The cell size of the foam may be less than 120 microns. The polyol-containing component may include a mixture of polyols having different functionalities.
    Type: Grant
    Filed: December 10, 2019
    Date of Patent: February 9, 2021
    Assignee: Johns Manville
    Inventors: Malay Nandi, Lance Wang, Jawed Asrar
  • Patent number: 10894869
    Abstract: A polyisocyanurate foam insulation product includes polyisocyanurate foam produced from reacting an isocyanate and a polyol blend having a functionality of at least 2.2. The isocyanate and the polyol blend are reacted so that the polyisocyanurate foam has an isocyanate index equivalent with or greater than 300. The polyisocyanurate foam includes a fire retardant and includes between 0.02 and 0.45 weight percent of a zinc salt compound. The foam insulation board exhibits a flame spread of no greater than 25 and a smoke index of no greater than 50 when exposed to flame conditions in accordance with an ASTM E-84 test.
    Type: Grant
    Filed: November 25, 2019
    Date of Patent: January 19, 2021
    Assignee: Johns Manville
    Inventors: Malay Nandi, Lance Wang, Jawed Asrar
  • Publication number: 20200217068
    Abstract: An insulative construction product includes a polyurethane foam core and a mixture of Aerogel and carbon black that is disposed within the polyurethane foam core. The mixture of Aerogel and carbon black includes between 90 and 99 weight percent Aerogel and between 1 and 10 weight percent carbon black. The polyurethane foam core includes between 10 and 90 percent by volume of the of Aerogel and carbon black mixture and the construction product has an R-value of at least 8.0 R/inch.
    Type: Application
    Filed: March 17, 2020
    Publication date: July 9, 2020
    Inventors: Guodong Zheng, Luke S. Weith, Malay Nandi, Lance Wang, Jawed Asrar
  • Publication number: 20200173165
    Abstract: A polyisocyanurate foam insulation product is produced from an isocyanate component and a polyol-containing component including a blowing agent. The polyol-containing component comprises one or more polyols, a fire retardant, and a hydroxyl-containing low-molecular-weight additive effective to increase the R-value per inch of the insulation product as measured at 40° F., as compared with an otherwise-identical formulation lacking the hydroxyl-containing low-molecular-weight additive. The polyisocyanurate foam insulation product may have an R-value per inch of at least 6.0 when measured at 40° F. and may have an R-value per inch of at least 5.5 when measured at 25° F. Suitable hydroxyl-containing low-molecular-weight additives may include triethanolamine, trimethylolpropane, N-methyldiethanolamine, 1,4 butanediol, or another suitable multi-functional alcohol or combination of multi-functional alcohols.
    Type: Application
    Filed: December 3, 2018
    Publication date: June 4, 2020
    Inventors: Malay Nandi, Lance Wang, Jawed Asrar
  • Patent number: 10633855
    Abstract: An insulative construction product includes a polyurethane foam core and a mixture of Aerogel and carbon black that is disposed within the polyurethane foam core. The mixture of Aerogel and carbon black includes between 90 and 99 weight percent Aerogel and between 1 and 10 weight percent carbon black. The polyurethane foam core includes between 10 and 90 percent by volume of the of Aerogel and carbon black mixture and the construction product has an R-value of at least 8.0 R/inch.
    Type: Grant
    Filed: December 1, 2017
    Date of Patent: April 28, 2020
    Assignee: Johns Manville
    Inventors: Guodong Zheng, Luke S Weith, Malay Nandi, Lance Wang, Jawed Asrar
  • Publication number: 20200114618
    Abstract: A polyisocyanurate foam insulation product is produced from an isocyanate component, a polyol-containing component, and a blowing agent. The polyol-containing component includes a first polyol and a second polyol, a fire retardant, and one or more surfactants, wherein the first polyol and the second polyol have different hydroxyl numbers, or have different functionalities, or differ in both hydroxyl number and functionality. In some formulations, the polylol-containing component may include a fire retardant, a metallo-organinc compound, or combinations thereof. The cell size of the foam may be less than 120 microns. The polyol-containing component may include a mixture of polyols having different functionalities.
    Type: Application
    Filed: December 10, 2019
    Publication date: April 16, 2020
    Inventors: Malay Nandi, Lance Wang, Jawed Asrar
  • Publication number: 20200095390
    Abstract: A polyisocyanurate foam insulation product includes polyisocyanurate foam produced from reacting an isocyanate and a polyol blend having a functionality of at least 2.2. The isocyanate and the polyol blend are reacted so that the polyisocyanurate foam has an isocyanate index equivalent with or greater than 300. The polyisocyanurate foam includes a fire retardant and includes between 0.02 and 0.45 weight percent of a zinc salt compound. The foam insulation board exhibits a flame spread of no greater than 25 and a smoke index of no greater than 50 when exposed to flame conditions in accordance with an ASTM E-84 test.
    Type: Application
    Filed: November 25, 2019
    Publication date: March 26, 2020
    Inventors: Malay Nandi, Lance Wang, Jawed Asrar
  • Patent number: 10563033
    Abstract: A polyisocyanurate foam insulation product includes polyisocyanurate foam produced from reacting an isocyanate and a polyol blend having a functionality of at least 2.2. The isocyanate and the polyol blend are reacted so that the polyisocyanurate foam has an isocyanate index equivalent with or greater than 300. The polyisocyanurate foam includes a fire retardant and includes between 0.02 and 0.45 weight percent of a zinc salt compound. The foam insulation board exhibits a flame spread of no greater than 25 and a smoke index of no greater than 50 when exposed to flame conditions in accordance with an ASTM E-84 test.
    Type: Grant
    Filed: September 28, 2017
    Date of Patent: February 18, 2020
    Assignee: Johns Manville
    Inventors: Malay Nandi, Lance Wang, Jawed Asrar
  • Publication number: 20200048905
    Abstract: A construction product described herein includes a fiber core that includes a plurality of entangled glass fibers. The fiber core also includes a binder that bonds the plurality of entangled glass fibers together and an Aerogel material that is homogenously or uniformly disposed within the fiber core. In some instances, the fiber core includes between 40 and 80 weight percent of the Aerogel material. The construction product has an R-value of at least 6.5 per inch, a flame spread index of no greater than 5, and a smoke development index of no greater than 20 as measured according to the ASTM E-84 tunnel test.
    Type: Application
    Filed: October 21, 2019
    Publication date: February 13, 2020
    Inventors: Guodong Zheng, Luke S. Weith, Malay Nandi, Lance Wang, Jawed Asrar
  • Patent number: 10525663
    Abstract: A polyisocyanurate foam insulation product is produced from an isocyanate component, a polyol-containing component, and a blowing agent. The polyol-containing component comprises one or more polyols, a fire retardant, and one or more surfactants, and the polyisocyanurate foam insulation product has an R-value per inch of at least 5.7 when measured at 40° F. In some formulations, the polylol-containing component may include a fire retardant, a metallo-organic compound, or combinations thereof. The cell size of the foam may be less than 120 microns. The polyol-containing component may include a mixture of polyols having different functionalities.
    Type: Grant
    Filed: September 28, 2017
    Date of Patent: January 7, 2020
    Assignee: Johns Manville
    Inventors: Malay Nandi, Lance Wang, Jawed Asrar
  • Patent number: 10480189
    Abstract: A construction product described herein includes a fiber core that includes a plurality of entangled glass fibers. The fiber core also includes a binder that bonds the plurality of entangled glass fibers together and an Aerogel material that is homogenously or uniformly disposed within the fiber core. In some instances, the fiber core includes between 40 and 80 weight percent of the Aerogel material. The construction product has an R-value of at least 6.5 per inch, a flame spread index of no greater than 5, and a smoke development index of no greater than 20 as measured according to the ASTM E-84 tunnel test.
    Type: Grant
    Filed: November 6, 2017
    Date of Patent: November 19, 2019
    Assignee: Johns Manville
    Inventors: Guodong Zheng, Luke S Weith, Malay Nandi, Lance Wang, Jawed Asrar
  • Publication number: 20190169842
    Abstract: An insulative construction product includes a polyurethane foam core and a mixture of Aerogel and carbon black that is disposed within the polyurethane foam core. The mixture of Aerogel and carbon black includes between 90 and 99 weight percent Aerogel and between 1 and 10 weight percent carbon black. The polyurethane foam core includes between 10 and 90 percent by volume of the of Aerogel and carbon black mixture and the construction product has an R-value of at least 8.0 R/inch.
    Type: Application
    Filed: December 1, 2017
    Publication date: June 6, 2019
    Inventors: Guodong Zheng, Luke S. Weith, Malay Nandi, Lance Wang, Jawed Asrar