Patents by Inventor King Lun Yeung
King Lun Yeung 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: 11945973Abstract: The ionic liquid-based coating is a coating for both porous and nonporous materials. As non-limiting examples, a porous substrate coated with the ionic liquid-based coating may be used to disinfect and remove microorganisms from air and water, to provide an antimicrobial surface for preventing microbial contamination, or to enhance filtration efficiency of the porous material for airborne and waterborne particulate matter without increasing flow resistance. As a further non-limiting example, a nonporous substrate coated with the ionic liquid-based coating may be used to form a surface capable of self-disinfection from microorganisms contacting surface. The ionic liquid-based coating includes at least one ionic liquid, an adhesive, and at least one additive, which may be a disinfectant, a viscosity modifier, a pH buffer, a fragrance, or combinations thereof.Type: GrantFiled: May 14, 2020Date of Patent: April 2, 2024Assignee: THE HONG KONG UNIVERSITY OF SCIENCE AND TECHNOLOGYInventors: King Lun Yeung, Wei Han, Xizi Song, Joseph Kai Cho Kwan, Yutang Luo
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Patent number: 11724242Abstract: An aerogel is formed by preparing metal-organic framework (MOF) aerogels by preparing a porous solid comprising a metal precursor for the metal-organic framework (MOF) aerogels, and transforming the metal precursor into the MOF by reacting the porous solid with organic ligands mixed with a solvent. The solvent is then removed by supercritical extraction and drying.Type: GrantFiled: December 27, 2019Date of Patent: August 15, 2023Assignee: THE HONG KONG UNIVERSITY OF SCIENCE AND TECHNOLOGYInventors: King Lun Yeung, Zhang Liu
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Publication number: 20230189811Abstract: A multilevel antimicrobial polymeric colloidal particle includes a polymer scaffold and at least one antimicrobial polymer carried on the polymer scaffold, where the polymer scaffold and the at least one antimicrobial polymer form a hollow colloidal particle. An antimicrobial core may be received within the hollow colloidal particle. The multilevel antimicrobial polymeric colloidal particles may be incorporated into an optically clear acrylic material to form an antimicrobial coating. The antimicrobial coating may be coated and ultraviolet cured onto a glass, metal or plastic substrate or the like to form a screen for electronic devices or the like which has antimicrobial properties.Type: ApplicationFiled: December 2, 2022Publication date: June 22, 2023Inventors: King Lun YEUNG, Dengyu JI
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Publication number: 20230157277Abstract: The antimicrobial coating material for surface coating is formed from encapsulated biocides. The biocides include at least one antimicrobial component. The biocides are encapsulated in inorganic-organic shells which are permeable to the biocides. The organic materials may include at least one nonionic polymer. The inorganic-organic shells encapsulate and contain the biocides to form capsule structures for storage and release of the biocides. The capsule structures may be single capsules or capsule-in-capsule structures. The inorganic materials may be present in a concentration of 0.5-95 wt % of the inorganic-organic shells. Alternatively, the inorganic materials may be present in a concentration of 5-60 wt %. The inorganic materials and the organic materials are each intermixed, with respect to one another, in structures of the inorganic-organic shells. These structures may be an attachment structure, a hybrid structure or a multi-layered structure.Type: ApplicationFiled: July 14, 2022Publication date: May 25, 2023Applicant: THE HONG KONG UNIVERSITY OF SCIENCE AND TECHNOLOGYInventors: King Lun YEUNG, Yue Tak LAI, Wei HAN, Ying LI, Yan LI
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Patent number: 11628231Abstract: Microbial disinfection is performed using continuous or intermittent lighting using one or more narrow wavelength light sources. The light sources illuminate with narrow wavelength characteristics. The lighting provides a sufficiently high intensity for rapid microbial disinfection process, while reducing the average energy consumption for microbial disinfection during the microbial disinfection process by targeting multiple cellular sites along different inactivation pathways.Type: GrantFiled: April 8, 2020Date of Patent: April 18, 2023Assignee: THE HONG KONG UNIVERSITY OF SCIENCE AND TECHNOLOGYInventors: King Lun Yeung, Qing Chang, Nga Ki Wong, Ning Zhan, Wei Han, Joseph Kai Cho Kwan, Javier Lopez Navas
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Publication number: 20230093881Abstract: The hand sanitizer may be a hand foam sanitizer or a hand gel sanitizer. Each of the hand sanitizers includes at least one stabilizing agent, at least one skin care agent, and a volume of disinfecting micelle capsules suspended therein. Each disinfecting capsule has a polymer shell which defines a hollow core. The polymer shell includes an antimicrobial material. The antimicrobial material may have a concentration of between 0.5 wt % and 95 wt % of the polymer shell. In order to make the hand foam sanitizer, at least one foaming agent is added to produce a foam by air foaming. The hollow core of each disinfecting capsule may be filled with a material, such as at least one disinfectant, at least one fragrance, at least one supplemental skin care agent, or combinations thereof.Type: ApplicationFiled: November 25, 2022Publication date: March 30, 2023Inventors: King Lun YEUNG, Ying LI, Ning ZHAN
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Publication number: 20230087431Abstract: The multilevel antimicrobial polymeric colloids as functional additives for latex coating are latex-based coatings with multilevel antimicrobial polymeric colloidal particles incorporated therein to provide antimicrobial properties. Each multilevel antimicrobial polymeric colloidal particle includes a polymer scaffold and at least one antimicrobial polymer carried on the polymer scaffold, such that the polymer scaffold and the at least one antimicrobial polymer form a hollow colloidal particle. As a non-limiting example, the polymer scaffold may be polyvinyl alcohol (PVA). As a further non-limiting example, the at least one antimicrobial polymer may be a combination of polyethyleneimine (PEI) and polyhexamethylene biguanide (PHMB). Each multilevel antimicrobial polymeric colloidal particle may also contain an antimicrobial core within the hollow colloidal particle.Type: ApplicationFiled: September 9, 2022Publication date: March 23, 2023Applicant: THE HONG KONG UNIVERSITY OF SCIENCE AND TECHNOLOGYInventors: KING LUN YEUNG, DENGYU JI
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Patent number: 11517510Abstract: The hand sanitizer may be a hand foam sanitizer or a hand gel sanitizer. Each of the hand sanitizers includes at least one stabilizing agent, at least one skin care agent, and a volume of disinfecting micelle capsules suspended therein. Each disinfecting capsule has a polymer shell which defines a hollow core. The polymer shell includes an antimicrobial material. The antimicrobial material may have a concentration of between 0.5 wt % and 95 wt % of the polymer shell. In order to make the hand foam sanitizer, at least one foaming agent is added to produce a foam by air foaming. The hollow core of each disinfecting capsule may be filled with a material, such as at least one disinfectant, at least one fragrance, at least one supplemental skin care agent, or combinations thereof.Type: GrantFiled: July 22, 2019Date of Patent: December 6, 2022Assignee: GERMAGIC BIOCHEMICAL TECHNOLOGY (SHANGHAI) CO., LTD.Inventors: King Lun Yeung, Ying Li, Ning Zhan
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Patent number: 11511261Abstract: The moisture-resistant catalyst for air pollution remediation is a catalyst with moisture-resistant properties, and which is used for removing nitrogen compound pollutants, such as ammonia (NH3), from air. The moisture-resistant catalyst for air pollution remediation includes at least one metal oxide catalyst, at least one inorganic oxide support for supporting the at least one metal oxide catalyst, and a porous framework for immobilizing the at least one metal oxide catalyst and the at least one inorganic oxide support, where the porous framework is moisture-resistant. As non-limiting examples, the at least one metal oxide catalyst may be supported on the at least one inorganic oxide support by precipitation, impregnation, dry milling, ion-exchange or combinations thereof. The at least one metal oxide catalyst supported on the at least one inorganic oxide support may be physically embedded in the porous framework.Type: GrantFiled: March 20, 2020Date of Patent: November 29, 2022Assignee: THE HONG KONG UNIVERSITY OF SCIENCE AND TECHNOLOGYInventors: King Lun Yeung, Wei Han, Hao Chen
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Publication number: 20220071216Abstract: The disinfectant-dosing microgel is formed from a mixture of a sol and a solution of a disinfecting and deodorizing agent. In use, the sol phase is transformed, by various conditions, into an active microgel. The disinfectant-dosing microgel is applied to the waste, such as by spraying, mixture therewith or the like. The combination of the sol and the solution of the disinfecting and deodorizing agent or, alternatively, the combination of the polymer and the solution of the disinfecting and deodorizing agent, is triggered to transform from the sol phase into the active microgel for long-term disinfection and deodorization of the waste by the temperature, pH, and/or salt concentration of the waste. The transformation to the active microgel for long-term disinfection and deodorization of the waste can also be initiated by adding chemical substances to alter the pH or promote gelation, either before, during or after application to the waste.Type: ApplicationFiled: September 3, 2021Publication date: March 10, 2022Applicant: THE HONG KONG UNIVERSITY OF SCIENCE AND TECHNOLOGYInventors: KING LUN YEUNG, KA KIT CHENG, LONG TING LUK
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Patent number: 10941060Abstract: The present subject matter is directed to water disinfection by pulsed electric field (PEF) systems. The present subject matter relates to a pulsed electric field assembly with a separator that separates and disinfects the microorganisms in drinking water. The present subject matter relates to an anti-corrosion electrode, particularly an electrode having a zeolite coating layer serving as a protector, a process for the preparation a zeolite coating on a conducting electrode substrate, and application of the zeolite coated electrode on water electrolysis and PEF systems.Type: GrantFiled: August 19, 2016Date of Patent: March 9, 2021Assignee: THE HONG KONG UNIVERSITY OF SCIENCE AND TECHNOLOGYInventors: King Lun Yeung, Joseph Kai Cho Kwan, Siu Ming Kwan, Oi Wa Lee, Pik Shuen Karen Hung
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Publication number: 20210022969Abstract: The hand sanitizer may be a hand foam sanitizer or a hand gel sanitizer. Each of the hand sanitizers includes at least one stabilizing agent, at least one skin care agent, and a volume of disinfecting micelle capsules suspended therein. Each disinfecting capsule has a polymer shell which defines a hollow core. The polymer shell includes an antimicrobial material. The antimicrobial material may have a concentration of between 0.5 wt % and 95 wt % of the polymer shell. In order to make the hand foam sanitizer, at least one foaming agent is added to produce a foam by air foaming. The hollow core of each disinfecting capsule may be filled with a material, such as at least one disinfectant, at least one fragrance, at least one supplemental skin care agent, or combinations thereof.Type: ApplicationFiled: July 22, 2019Publication date: January 28, 2021Inventors: King Lun YEUNG, Ying LI, Ning ZHAN
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Patent number: 10842148Abstract: Methods and formulations for antimicrobial and anti-biofouling coating comprising: a hollow round colloidal structure, comprising: an active polymer shell; and an active or inert core; wherein the active polymer shell comprises one and more polymers with antimicrobial and anti-biofouling activities selected from the group consisting of polyethylenimine (PEI), functionalized chitosan (CHI), polyquaternium, poly(diallyldimethylammonium chloride) (PDDA) and polyhexamethylene biguanide (PHMD); wherein the active or inert core contains one and more disinfectants, biocides, fragrances or inert solvent; and wherein the hollow round colloidal structure is stable for at least 3 months.Type: GrantFiled: June 30, 2017Date of Patent: November 24, 2020Assignee: THE HONG KONG UNIVERSITY OF SCIENCE AND TECHNOLOGYInventors: King Lun Yeung, Hanrong Zhang, Ying Li, Awais Farid
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Publication number: 20200362179Abstract: The ionic liquid-based coating is a coating for both porous and nonporous materials. As non-limiting examples, a porous substrate coated with the ionic liquid-based coating may be used to disinfect and remove microorganisms from air and water, to provide an antimicrobial surface for preventing microbial contamination, or to enhance filtration efficiency of the porous material for airborne and waterborne particulate matter without increasing flow resistance. As a further non-limiting example, a nonporous substrate coated with the ionic liquid-based coating may be used to form a surface capable of self-disinfection from microorganisms contacting surface. The ionic liquid-based coating includes at least one ionic liquid, an adhesive, and at least one additive, which may be a disinfectant, a viscosity modifier, a pH buffer, a fragrance, or combinations thereof.Type: ApplicationFiled: May 14, 2020Publication date: November 19, 2020Inventors: KING LUN YEUNG, WEI HAN, XIZI SONG, JOSEPH KAI CHO KWAN
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Publication number: 20200298210Abstract: The moisture-resistant catalyst for air pollution remediation is a catalyst with moisture-resistant properties, and which is used for removing nitrogen compound pollutants, such as ammonia (NH3), from air. The moisture-resistant catalyst for air pollution remediation includes at least one metal oxide catalyst, at least one inorganic oxide support for supporting the at least one metal oxide catalyst, and a porous framework for immobilizing the at least one metal oxide catalyst and the at least one inorganic oxide support, where the porous framework is moisture-resistant. As non-limiting examples, the at least one metal oxide catalyst may be supported on the at least one inorganic oxide support by precipitation, impregnation, dry milling, ion-exchange or combinations thereof. The at least one metal oxide catalyst supported on the at least one inorganic oxide support may be physically embedded in the porous framework.Type: ApplicationFiled: March 20, 2020Publication date: September 24, 2020Applicant: THE HONG KONG UNIVERSITY OF SCIENCE AND TECHNOLOGYInventors: KING LUN YEUNG, WEI HAN, HAO CHEN
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Publication number: 20200230274Abstract: Microbial disinfection is performed using continuous or intermittent lighting using one or more narrow wavelength light sources. The light sources illuminate with narrow wavelength characteristics. The lighting provides a sufficiently high intensity for rapid microbial disinfection process, while reducing the average energy consumption for microbial disinfection during the microbial disinfection process by targeting multiple cellular sites along different inactivation pathways.Type: ApplicationFiled: April 8, 2020Publication date: July 23, 2020Inventors: King Lun YEUNG, Qing CHANG, Nga Ki WONG, Ning ZHAN, Wei HAN, Joseph Kai Cho KWAN, Javier Lopez NAVAS
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Publication number: 20200206710Abstract: An aerogel is formed by preparing metal-organic framework (MOF) aerogels by preparing a porous solid comprising a metal precursor for the metal-organic framework (MOF) aerogels, and transforming the metal precursor into the MOF by reacting the porous solid with organic ligands mixed with a solvent. The solvent is then removed by supercritical extraction and drying.Type: ApplicationFiled: December 27, 2019Publication date: July 2, 2020Inventors: King Lun YEUNG, Zhang LIU
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Publication number: 20200094187Abstract: Porous metal oxide catalytic materials with planar morphologies which are derived from metal-organic framework (MOF) materials via thermal decomposition, oxidation pretreatment and pyrolysis processes. The porous metal oxides are mainly transition metal oxides, derived from MOFs containing the corresponding transition metal ions, such as Cu, Zn, Y, La, Ce, Ti, Zr, V, Cr, Mn, Fe, Co, and Ni ions. The transformation conditions from MOF materials to metal oxides, such as temperature, atmosphere and duration, are well defined to obtain metal oxides with controlled morphologies. Furthermore, the present subject matter relates to a low-temperature catalytic decomposition of volatile organic compounds (VOCs) with a wide concentration range on two-dimensional metal oxides.Type: ApplicationFiled: July 31, 2019Publication date: March 26, 2020Inventors: King Lun YEUNG, Qingyue WANG, Zhimin LI, Wei HAN
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Patent number: 10577264Abstract: The present disclosure relates to a micro-mini pulsed electric field (PEF) device for point-of-use disinfection of drinking water. The pulsed electric field device comprises micro-engineered electrodes and a low-voltage pulsed electric field generator circuit. A pulsed electric field is generated across a micro-gap between the electrodes to achieve disinfection of drinking water.Type: GrantFiled: November 21, 2013Date of Patent: March 3, 2020Assignee: THE HONG KONG UNIVERSITY OF SCIENCE AND TECHNOLOGYInventors: King Lun Yeung, Joseph Kai Cho Kwan, Siu Ming Kwan, Ka Wo Lam
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Patent number: 10548854Abstract: Transdermal patches and devices for delivery of therapeutic drug and/or cosmetic formulations through an intact or porated skin barrier are described. Active-infusion delivers controlled dosing over a period of time to provide long-term efficacy. Methods and devices for preparing active-infusion patches for controlled dose delivery by nonelectronic devices and methods of skin poration that is safe and painless are described.Type: GrantFiled: September 23, 2013Date of Patent: February 4, 2020Assignee: The Hong Kong University of Science and TechnologyInventors: King Lun Yeung, Wai Kit Wong, Siu Ming Kwan, Li Yin Chau, Ho Yee Timothy Poon, Ming Hung Thomas Lee, Albert Hee Lum Chow