Patents by Inventor Yueying CHEN

Yueying CHEN 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: 11970604
    Abstract: A germ-repellent plastic for use in a gas pathway of a respiratory device contains an anti-biofouling compound, and a basic plastic. The anti-biofouling compound is optionally selected from the group of a polyol, a polyether polyol, a polyol derivative, and a combination thereof; or the anti-biofouling compound is selected from the group consisting of a polyether, a poly(ethylene glycol) ether, a polysorbate, and a combination thereof; or the anti-biofouling compound is selected from the group consisting of poly(ethylene glycol) sorbitan monolaurate, poly(ethylene glycol) sorbitan monooleate, poly(ethylene glycol) sorbitol hexaoleate, ceteareth, and a combination thereof. The basic plastic is selected from the group of a blend of a low-density polyethylene polymer and an ethyl vinyl acetate copolymer, a blend of a polypropylene polymer and an ethyl vinyl acetate copolymer, a blend of polyolefin elastomer polymers and a polyvinyl chloride polymer.
    Type: Grant
    Filed: April 9, 2018
    Date of Patent: April 30, 2024
    Assignee: VINCENT MEDICAL MANUFACTURING CO., LTD.
    Inventors: Wenjun Meng, Sau Kuen Connie Kwok, Yueying Chen, Mingyu Zhang, Kwok Fu Fu, Ching Sau Chu
  • Publication number: 20240076491
    Abstract: The present invention provides a non-porous, breathable and waterproof transparent elastomer film and methods for fabricating the same. The film includes a polyurethane (PU) and an amphiphilic modifier having a hydrophilic segment that acts as a channel for water vapor transmission through the film connected to a hydrophobic segment that anchors the amphiphilic modifier to a portion of the polyurethane base resin. The resultant non-porous, breathable and waterproof transparent elastomer film has a water vapor transmission rate (WVTR) or breathability of not less than 300 g/m2/24 hr according to ASTM E96B, and having at least 90% of the transmittance. The film is also resistant to liquid penetration and micro-contaminants such as bacteria and virus, making it suitable for broad applications in medical, healthcare and food packaging industries.
    Type: Application
    Filed: August 16, 2022
    Publication date: March 7, 2024
    Inventors: Xianqiao LIU, Yik Wong NG, Fengyu YANG, Yueying CHEN
  • Publication number: 20240076460
    Abstract: The present invention provides a non-porous, breathable and waterproof transparent plastic film on a plastic substrate and methods for fabricating the same. The film includes a thermoplastic polyester resin, an amphiphilic modifier having a hydrophilic segment that acts as a channel for water vapor transmission through the film connected to a hydrophobic segment that anchors the amphiphilic modifier to a portion of the polyurethane base resin and a compatibilizer. The resultant non-porous, breathable and waterproof transparent plastic film has a water vapor transmission rate (WVTR) or breathability of not less than 250 g/m2/24 hr according to ASTM E96B, and having at least 90% of the transmittance. They are also resistant to liquid penetration and micro-contaminants such as bacteria and virus, making them suitable for broad applications in medical, healthcare and food packaging industries.
    Type: Application
    Filed: August 16, 2022
    Publication date: March 7, 2024
    Applicant: Nano and Advanced Materials Institute Limited
    Inventors: Xianqiao LIU, Fengyu YANG, Yik Wong NG, Yueying CHEN
  • Publication number: 20230390976
    Abstract: A master batch composition for a weight-reduced plastic product includes a carrier resin, a core-shell foaming agent, and at least one lubricant. The core-shell foaming agent includes at least one outer polymeric shell and at least one inner foaming agent core. The outer polymeric shell encapsulates the inner foaming agent core. The inner foaming agent core includes alkane. The master batch composition is configured to be integrated into the weight-reduced plastic product by extrusion blow molding with a base plastic resin to create a foamed plastic having a foaming pore size from 10 to 80 ?m.
    Type: Application
    Filed: June 2, 2022
    Publication date: December 7, 2023
    Inventors: Yueying CHEN, Qi JIANG, Dongli SUN, Xianqiao LIU
  • Publication number: 20230374292
    Abstract: A food contact safe, germ repellent plastic selected from modified thermoplastic, vulcanized silicone rubber or modified base plastic. The plastic includes an anti-biofouling agent at approximately 1 to 20 wt. % to the total weight of the plastic; and one or more components of fillers, carrier agent, mold releasing agent, curing agent, and/or oil, at approximately 0.1 to 2 wt. % for each or more of the components to the total weight of the plastic, where the anti-biofouling agent forming a hydration layer on the plastic imparts germ repellency against bacteria including Escherichia coli and Staphylococcus aureus while optical and mechanical properties including transmittance, tensile strength, impact strength, hardness, and/or heat deflection temperature of the plastic is/are changed by less than 10% after being associated with the anti-biofouling agent and the one or more of the components other than the anti-biofouling agent.
    Type: Application
    Filed: December 22, 2021
    Publication date: November 23, 2023
    Inventors: Wenjun MENG, Wai Hong YU, Mingyu ZHANG, Wing Hin LEUNG, Yueying CHEN
  • Publication number: 20220380573
    Abstract: A biocide-free, germ-repellent, crosslinked thermoset elastomer is provided. The elastomer base is a thermoset elastomer base selected from natural rubber, synthetic rubber, solid or liquid silicone rubber, or mixtures thereof. At least one germ-repelling modifier is selected from one or more of polyethylene glycol, a polyethylene glycol derivative, alcohol ethoxylate, a polymer including an isocyanate group, a polymer including an allyloxy group, siloxane, polyether modified silicone, polysorbates and copolymers or mixtures thereof. The germ-repelling modifier is permanently bonded to the thermoset elastomer base through a chemical reaction during extrusion, molding, or curing. This chemical reaction also crosslinks the thermoset elastomer base.
    Type: Application
    Filed: July 20, 2022
    Publication date: December 1, 2022
    Inventors: Xianqiao LIU, Qi JIANG, Yueying CHEN
  • Patent number: 11505687
    Abstract: The present invention provides a master batch composition for environmentally degrading conventional plastics including a carrier resin, at least one oxidative degradant, at least one nature biodegradable degradant and at least one foaming agent. The present invention also provides a plastic product which is environmentally degradable at a very low cost versus conventional bio-sourced plastics, and has broad applications for single-use disposable applications or for short-lived products that are discarded within two years of manufacture.
    Type: Grant
    Filed: August 5, 2020
    Date of Patent: November 22, 2022
    Assignee: Nano and Advanced Materials Institute Limited
    Inventors: Xianqiao Liu, Yueying Chen, Yushen Wang
  • Publication number: 20220041848
    Abstract: The present invention provides a master batch composition for environmentally degrading conventional plastics including a carrier resin, at least one oxidative degradant, at least one nature biodegradable degradant and at least one foaming agent. The present invention also provides a plastic product which is environmentally degradable at a very low cost versus conventional bio-sourced plastics, and has broad applications for single-use disposable applications or for short-lived products that are discarded within two years of manufacture.
    Type: Application
    Filed: August 5, 2020
    Publication date: February 10, 2022
    Inventors: Xianqiao LIU, Yueying CHEN, Yushen WANG
  • Publication number: 20220040892
    Abstract: The present invention provides a method for preparing a uniform-sized core-shell foaming agent includes: providing a SPG membrane having a pore size ranging approximately from 0.5 to 50 ?m; preparing a dispersed phase liquid including at least one shell material, at least one initiator, at least one cross-linker and at least one blowing agent; preparing a continuous phase liquid including at least one solvent, at least one salt, and at least one stabilizer; delivering a first pressurized gas to dispense the dispersed phase liquid to the continuous phase liquid through the SPG membrane; stirring until the uniform-sized emulsion being homogenous; initiating the polymerization of the uniform-sized emulsion to form microspheres; drying the microspheres to form the uniform-sized core shell foaming agent.
    Type: Application
    Filed: August 5, 2020
    Publication date: February 10, 2022
    Inventors: Xianqiao LIU, Yushen WANG, Yueying Chen
  • Publication number: 20220032494
    Abstract: The present invention relates to a formaldehyde-free medium-high-density board capable of meeting deep facing requirements, and a method for manufacturing same. The method includes: wood chipping, screening, cooking and softening, fiber separating, gluing, drying and sorting, paving, pre-pressing, hot pressing, cooling, sanding, and inspection and warehousing, where the gluing is two-step gluing, including: first performing gluing once by using a lignin adhesive, and then performing secondary gluing by using an MDI adhesive after waterproof treatment. According to the manufacturing method of the present invention, by using biomass adhesives and formaldehyde-free adhesives without adding additives such as a curing agent and an anti-mildew agent, formaldehyde pollution is eliminated from the source by using a two-step gluing method, so that production is formaldehyde-free, and the product is formaldehyde-free.
    Type: Application
    Filed: October 18, 2021
    Publication date: February 3, 2022
    Inventors: Runcang Sun, Tongqi Yuan, Xiaolong Chen, Supeng Wang, Yueying Chen, Xianpeng Zhou
  • Patent number: 11160276
    Abstract: Provided herein is a method for preparing antimicrobial thermoplastic resins and products thereof.
    Type: Grant
    Filed: December 11, 2019
    Date of Patent: November 2, 2021
    Assignee: Nano and Advanced Materials Institute Limited
    Inventors: Wenjun Meng, Yueying Chen, Yui Ting Richard Lau, Sau Kuen Connie Kwok, Sheung Yin Li
  • Publication number: 20210115200
    Abstract: A germ-repellent plastic contains an anti-biofouling compound, and a basic plastic. The anti-biofouling compound is optionally selected from the group of a polyol, a polyether polyol, a polyol derivative, and a combination thereof; or the anti-biofouling compound is selected from the group consisting of a polyether, a poly (ethylene glycol) ether, a polysorbate, and a combination thereof; or the anti-biofouling compound is selected from the group consisting of poly (ethylene glycol) sorbitan monolaurate, poly (ethylene glycol) sorbitan monooleate, poly (ethylene glycol) sorbitol hexaoleate, ceteareth, and a combination thereof. The basic plastic is not a blend of a low-density polyethylene polymer and an ethyl vinyl acetate copolymer, a blend of a polypropylene polymer and an ethyl vinyl acetate copolymer, a blend of polyolefin elastomer polymers and a polyvinyl chloride polymer. A method for manufacturing such a germ-repellent plastic and a germ-repellent plastic item are also described.
    Type: Application
    Filed: April 9, 2018
    Publication date: April 22, 2021
    Inventors: Wenjun MENG, Sau Kuen Connie KWOK, Yueying CHEN, Mingyu ZHANG
  • Publication number: 20210038854
    Abstract: A germ-repellent plastic for use in a gas pathway of a respiratory device contains an anti-biofouling compound, and a basic plastic. The anti-biofouling compound is optionally selected from the group of a polyol, a polyether polyol, a polyol derivative, and a combination thereof; or the anti-biofouling compound is selected from the group consisting of a polyether, a poly(ethylene glycol) ether, a polysorbate, and a combination thereof; or the anti-biofouling compound is selected from the group consisting of poly(ethylene glycol) sorbitan monolaurate, poly(ethylene glycol) sorbitan monooleate, poly(ethylene glycol) sorbitol hexaoleate, ceteareth, and a combination thereof. The basic plastic is selected from the group of a blend of a low-density polyethylene polymer and an ethyl vinyl acetate copolymer, a blend of a polypropylene polymer and an ethyl vinyl acetate copolymer, a blend of polyolefin elastomer polymers and a polyvinyl chloride polymer.
    Type: Application
    Filed: April 9, 2018
    Publication date: February 11, 2021
    Inventors: Wenjun MENG, Sau Kuen Connie KWOK, Yueying CHEN, Mingyu ZHANG, Kwok Fu FU, Ching Sau CHU
  • Patent number: 10836890
    Abstract: This invention discloses a transparent standalone resin or masterbatch concentrate composition and manufacturing method of transforming commercial transparent grade base thermoplastics into anti-biofouling resins through extrusion or any similar hot melt mixing processes. The re-compound solids enable a number of product reforming processes, including but not limited to thermoforming, profile extrusion, injection molding, blow molding, blow filming, film casting, and spinning into articles of different shapes and geometries or overmolding on plastic substrates that can resist surface adsorption of microbes, mammalian cells, proteins, peptides, nucleic acids, steroids and other cellular constituents after solidification. The articles formed thereof additionally exhibit mechanical reinforcement and no leaching while retain the optical clarity of the base thermoplastics in the same product form as quantified in terms of the light transmittance and haze.
    Type: Grant
    Filed: January 25, 2017
    Date of Patent: November 17, 2020
    Assignee: Nano and Advanced Materials Institute Limited
    Inventors: Yiu Ting Richard Lau, You Wu, Yueying Chen, Wenjun Meng, Sau Kuen Connie Kwok
  • Publication number: 20200115534
    Abstract: This invention discloses a transparent standalone resin or masterbatch concentrate composition and manufacturing method of transforming commercial transparent grade base thermoplastics into anti-biofouling resins through extrusion or any similar hot melt mixing processes. The re-compound solids enable a number of product reforming processes, including but not limited to thermoforming, profile extrusion, injection molding, blow molding, blow filming, film casting, and spinning into articles of different shapes and geometries or overmolding on plastic substrates that can resist surface adsorption of microbes, mammalian cells, proteins, peptides, nucleic acids, steroids and other cellular constituents after solidification. The articles formed thereof additionally exhibit mechanical reinforcement and no leaching while retain the optical clarity of the base thermoplastics in the same product form as quantified in terms of the light transmittance and haze.
    Type: Application
    Filed: December 12, 2019
    Publication date: April 16, 2020
    Inventors: Wenjun MENG, Yueying CHEN, Yiu Ting Richard LAU
  • Publication number: 20200107545
    Abstract: Provided herein is a method for preparing antimicrobial thermoplastic resins and products thereof.
    Type: Application
    Filed: December 11, 2019
    Publication date: April 9, 2020
    Inventors: Wenjun MENG, Yueying CHEN, Yiu Ting Richard LAU, Sau Kuen Connie KWOK, Sheung Yin LI
  • Patent number: 10548314
    Abstract: A built-in and process-adaptive formulation of antimicrobial commodity thermoplastic resins with mixed compositions comprising of a polymer, a backbone linker, and a non-labile antifouling and biocompatible coupling agent which is melt-processable and enabled to be manufactured into finished products in the form of solid, monolith, tube, composite, fiber, film, sheet and varnish without the prerequisite of biocides or antimicrobial additives is disclosed. The said formulation is adapted to thermoforming and thermal curing processes including but not limited to melt compounding, spinning, extrusion, molding, compression foaming and drawing. The antimicrobial property is attributed to the persistent formation of a non-stick bacteria-repellent tethered layer in which the antifouling component of the said formulation is heterogeneously phase separated and/or surface migrated to the surface after product forming in order to minimize adsorption and/or colonization of bacteria.
    Type: Grant
    Filed: December 19, 2016
    Date of Patent: February 4, 2020
    Assignee: Nano and Advanced Materials Institute Limited
    Inventors: Yiu Ting Richard Lau, Sau Kuen Connie Kwok, Wenjun Meng, Sheung Yin Li, Yueying Chen
  • Patent number: 10525614
    Abstract: A built-in and process-adaptive formulation of antimicrobial commodity thermoplastic resins with mixed compositions comprising of a polymer, a backbone linker, and a non-labile antifouling and biocompatible coupling agent which is melt-processable and enabled to be manufactured into finished products in the form of solid, monolith, tube, composite, fiber, film, sheet and varnish without the prerequisite of biocides or antimicrobial additives is disclosed. The said formulation is adapted to thermoforming and thermal curing processes including but not limited to melt compounding, spinning, extrusion, molding, compression foaming and drawing. The antimicrobial property is attributed to the persistent formation of a non-stick bacteria-repellent tethered layer in which the antifouling component of the said formulation is heterogeneously phase separated and/or surface migrated to the surface after product forming in order to minimize adsorption and/or colonization of bacteria.
    Type: Grant
    Filed: January 8, 2016
    Date of Patent: January 7, 2020
    Assignee: Nano and Advanced Materials Institute Limited
    Inventors: Yiu Ting Richard Lau, Sau Kuen Connie Kwok, Wenjun Meng, Sheung Yin Li, Yueying Chen
  • Publication number: 20180208753
    Abstract: This invention discloses a transparent standalone resin or masterbatch concentrate composition and manufacturing method of transforming commercial transparent grade base thermoplastics into anti-biofouling resins through extrusion or any similar hot melt mixing processes. The re-compound solids enable a number of product reforming processes, including but not limited to thermoforming, profile extrusion, injection molding, blow molding, blow filming, film casting, and spinning into articles of different shapes and geometries or overmolding on plastic substrates that can resist surface adsorption of microbes, mammalian cells, proteins, peptides, nucleic acids, steroids and other cellular constituents after solidification. The articles formed thereof additionally exhibit mechanical reinforcement and no leaching while retain the optical clarity of the base thermoplastics in the same product form as quantified in terms of the light transmittance and haze.
    Type: Application
    Filed: January 25, 2017
    Publication date: July 26, 2018
    Inventors: Yiu Ting Richard LAU, You WU, Yueying CHEN, Wenjun MENG, Sau Kuen Connie KWOK
  • Publication number: 20170135344
    Abstract: A built-in and process-adaptive formulation of antimicrobial commodity thermoplastic resins with mixed compositions comprising of a polymer, a backbone linker, and a non-labile antifouling and biocompatible coupling agent which is melt-processable and enabled to be manufactured into finished products in the form of solid, monolith, tube, composite, fiber, film, sheet and varnish without the prerequisite of biocides or antimicrobial additives is disclosed. The said formulation is adapted to thermoforming and thermal curing processes including but not limited to melt compounding, spinning, extrusion, molding, compression foaming and drawing. The antimicrobial property is attributed to the persistent formation of a non-stick bacteria-repellent tethered layer in which the antifouling component of the said formulation is heterogeneously phase separated and/or surface migrated to the surface after product forming in order to minimize adsorption and/or colonization of bacteria.
    Type: Application
    Filed: December 19, 2016
    Publication date: May 18, 2017
    Inventors: Yiu Tin Richard LAU, Sau Kuen Connie KWOK, Wenjun MENG, Sheung Yin LI, Yueying CHEN