Patents by Inventor Lance Wang

Lance Wang 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: 11951716
    Abstract: A roofing membrane includes a thermoplastic polyolefin (TPO) layer and a polyvinyl chloride (PVC) layer. The TPO layer forms a bottom layer of the roofing membrane, and the PVC layer is positioned atop the TPO layer so that the PVC layer forms a top layer of the roofing membrane. The TPO layer and the PVC layer are configured to be chemically compatible so that the TPO layer and the PVC layer are chemically bonded and function as a single roofing membrane. Compatibilizing includes at least one of (i) adding a compatibilizing agent to at least one of the TPO material and the PVC material prior to extrusion and (ii) positioning at least one compatibilizing film, prior to bonding, between the TPO material and the PVC material.
    Type: Grant
    Filed: April 1, 2021
    Date of Patent: April 9, 2024
    Assignee: Johns Manville
    Inventors: Diego Pedrazzoli, Lichih R Peng, Lance Wang, Jawed Asrar
  • 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
  • Patent number: 11884835
    Abstract: Embodiments may include a coated granule for roofing systems. The coated granule may include an aluminum silicate granule and a coating disposed on the aluminum silicate granule. The coating may include a copolymer and a siloxane-based or a silane-based compound. The copolymer may be a cationic fluorinated (meth)acrylic copolymer. The aluminum silicate granule may have a particle size in a range from 0.2 mm to 2.4 mm. The aluminum silicate granule may have a 65% or greater reflectivity. The coated granule may repel oil and maintain its reflectivity better than with other techniques.
    Type: Grant
    Filed: August 2, 2022
    Date of Patent: January 30, 2024
    Assignee: Johns Manville
    Inventors: ChangQing Shen, Joel Hazy, Julian Metz, Lance Wang
  • Publication number: 20230083883
    Abstract: Provided is a polymer blend composition comprising linear low density polyethylene, a polypropylene polymer, generally comprising a random polypropylene copolymer, and a compatibilizer. In one embodiment, there is provided a polymer blend composition comprising 15 to 35 wt % of a polypropylene polymer, 30-60 wt % of a linear low density polyethylene, and a compatibilizer polymer composition comprising 21-50 wt % of the polymer blend. The polymer blend is quite useful in a roofing membrane.
    Type: Application
    Filed: September 1, 2022
    Publication date: March 16, 2023
    Inventors: Lichih R. Peng, Jordan Kortmeyer, ChangQing Shen, 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: 11578197
    Abstract: Provided is a polymer blend composition comprising linear low density polyethylene, a propylene polymer generally having rubber dispersed therein, and a combination of a propylene copolymer and an ethylene copolymer. In one embodiment, there is provided a polymer blend composition comprising 15 to 75 weight percent of a propylene polymer having from 10-60% crystallinity, 30-50 weight percent of a linear low density polyethylene, and a combination of the propylene copolymer and the ethylene copolymer comprising the remainder of the composition.
    Type: Grant
    Filed: April 14, 2021
    Date of Patent: February 14, 2023
    Assignee: Johns Manville
    Inventors: Lichih R Peng, Jordan Kortmeyer, Lance Wang, Jawed Asrar
  • Patent number: 11549268
    Abstract: Embodiments may include an insulated structure. The insulated structure may include a plurality of structural support members coupled together to form a frame. The insulated structure may also include a plurality of first wall boards attached to an exterior side of the frame to form an exterior wall or surface of the structure. The insulated structure may further include a spray foam insulation positioned within at least one of the wall cavities of the structure. The spray foam insulation may have an insulative R-value greater than or equal to 6.0 per inch at 40° F. The spray foam formulation may be made from a formulation that includes a reaction product of a polyisocyanate compound and a polyol compound and a blowing agent. The blowing agent may include a mixture of n-pentane and isopentane, where the mixture is at least 75% isopentane.
    Type: Grant
    Filed: October 2, 2020
    Date of Patent: January 10, 2023
    Inventors: 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: 20220372325
    Abstract: Embodiments may include a coated granule for roofing systems. The coated granule may include an aluminum silicate granule and a coating disposed on the aluminum silicate granule. The coating may include a copolymer and a siloxane-based or a silane-based compound. The copolymer may be a cationic fluorinated (meth)acrylic copolymer. The aluminum silicate granule may have a particle size in a range from 0.2 mm to 2.4 mm. The aluminum silicate granule may have a 65% or greater reflectivity. The coated granule may repel oil and maintain its reflectivity better than with other techniques.
    Type: Application
    Filed: August 2, 2022
    Publication date: November 24, 2022
    Inventors: ChangQing Shen, Joel Hazy, Julian Metz, Lance Wang
  • Patent number: 11466174
    Abstract: Embodiments may include a coated granule for roofing systems. The coated granule may include an aluminum silicate granule and a coating disposed on the aluminum silicate granule. The coating may include a copolymer and a siloxane-based or a silane-based compound. The copolymer may be a cationic fluorinated (meth)acrylic copolymer. The aluminum silicate granule may have a particle size in a range from 0.2 mm to 2.4 mm. The aluminum silicate granule may have a 65% or greater reflectivity. The coated granule may repel oil and maintain its reflectivity better than with other techniques.
    Type: Grant
    Filed: February 10, 2020
    Date of Patent: October 11, 2022
    Assignee: Johns Manville
    Inventors: Changqing Shen, Joel Hazy, Julian Metz, Lance Wang
  • Publication number: 20220314585
    Abstract: A roofing membrane includes a thermoplastic polyolefin (TPO) layer and a polyvinyl chloride (PVC) layer. The TPO layer forms a bottom layer of the roofing membrane, and the PVC layer is positioned atop the TPO layer so that the PVC layer forms a top layer of the roofing membrane. The TPO layer and the PVC layer are configured to be chemically compatible so that the TPO layer and the PVC layer are chemically bonded and function as a single roofing membrane. Compatibilizing includes at least one of (i) adding a compatibilizing agent to at least one of the TPO material and the PVC material prior to extrusion and (ii) positioning at least one compatibilizing film, prior to bonding, between the TPO material and the PVC material.
    Type: Application
    Filed: April 1, 2021
    Publication date: October 6, 2022
    Inventors: Diego Pedrazzoli, Lichih R. Peng, Lance Wang, Jawed Asrar
  • Publication number: 20220250335
    Abstract: A lightweight polymer-based composite product may include a polymer material body and a lightweight filler material that is embedded in the polymer. The polymer material body may be an in-situ polymerized polymer formed via casting of a reactive resin in a mold. The polymer may have a density of at least 1.0 g/cm3. The lightweight filler material may be concentrated on at least a portion of a first surface of the polymer material body. The lightweight filler material may have a density of between 0.1 and 1.0 g/cm3. The lightweight polymer-based composite product may have a density that is less than a comparable product that consists mainly of the polymer.
    Type: Application
    Filed: February 11, 2021
    Publication date: August 11, 2022
    Inventors: Mingfu Zhang, Jieyu Hu, 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: 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
  • 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: 11286380
    Abstract: Provided is a polymer blend composition comprising linear low density polyethylene, a propylene polymer generally having rubber dispersed therein, and a combination of a propylene copolymer and an ethylene copolymer. In one embodiment, there is provided a polymer blend composition comprising 15 to 75 weight percent of a propylene polymer having from 10-60% crystallinity, 30-50 weight percent of a linear low density polyethylene, and a combination of the propylene copolymer and the ethylene copolymer comprising the remainder of the composition.
    Type: Grant
    Filed: February 27, 2020
    Date of Patent: March 29, 2022
    Assignee: Johns Manville
    Inventors: Lichih R Peng, Jordan Kortmeyer, 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
  • Publication number: 20210230410
    Abstract: Provided is a polymer blend composition comprising linear low density polyethylene, a propylene polymer generally having rubber dispersed therein, and a combination of a propylene copolymer and an ethylene copolymer. In one embodiment, there is provided a polymer blend composition comprising 15 to 75 weight percent of a propylene polymer having from 10-60% crystallinity, 30-50 weight percent of a linear low density polyethylene, and a combination of the propylene copolymer and the ethylene copolymer comprising the remainder of the composition.
    Type: Application
    Filed: April 14, 2021
    Publication date: July 29, 2021
    Inventors: Lichih R. Peng, Jordan Kortmeyer, 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: 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