Patents by Inventor Howard Yu
Howard Yu 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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Publication number: 20230051258Abstract: Filter media comprising non-woven fiber webs having one or more advantageous physical properties are generally described. In some embodiments, a filter media and/or non-woven fiber web described herein comprises a combination of fibers that results in enhanced physical properties. For example, the non-woven fiber web may comprise a combination of fiber types that is advantageous, such as a combination comprising fibrillated fibers, glass fibers, and/or binder fibers. In some cases, the filter media and/or non-woven fiber web comprising the combination of fibers may be formed into undulations (e.g., by a creping and/or microcreping process) to further enhance the physical properties of the filter media and/or non-woven fiber.Type: ApplicationFiled: June 22, 2022Publication date: February 16, 2023Applicant: Hollingsworth & Vose CompanyInventors: Sudhakar Jaganathan, Xinquan Cheng, Howard Yu, Leilei Luo, Zhiping Jiang, Yu Liu, Mark Rowlands, Wei Mu, James M. Witsch, Stephan Daus
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Publication number: 20220249997Abstract: Surface modified filter media, including surface modified filter media having enhanced performance characteristics, are provided. In some embodiments, a filter media may comprise two or more layers designed to enhance fluid separation efficiency. One or more of the layers may have at least a portion of a surface that is modified to alter and/or enhance the wettability of the surface with respect to a particular fluid. In certain embodiments involving a filter media including more than one surface modified layer, at least one surface modified layer may have a greater air permeability and/or mean flow pore size than that of another surface modified layer. Such a configuration of layers may result in the media having enhanced fluid separation properties compared to filter media that do not include such modified layers or configuration of layers, all other factors being equal. The filter media may be well-suited for a variety of applications, including filtering fuel, air, and lube oil.Type: ApplicationFiled: March 7, 2022Publication date: August 11, 2022Applicant: Hollingsworth & Vose CompanyInventors: Sneha Swaminathan, Howard Yu, Siqiang Zhu
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Publication number: 20220193588Abstract: Filter media comprising non-woven fiber webs and having one or more advantageous structural properties are generally described. In some embodiments, a filter media and/or non-woven fiber web described herein has one or more properties that are both beneficial and easily obtainable by undulating the non-woven fiber web, such as by performing a creping procedure. This property may be characteristic of the procedure employed to form the undulations (e.g., creping and/or microcreping), or may be attainable via one or more methods of undulation.Type: ApplicationFiled: December 18, 2020Publication date: June 23, 2022Applicant: Hollingsworth & Vose CompanyInventors: Sudheer Jinka, Praveen Kumar Yegya Raman, Howard Yu, Xinquan Cheng, Sudhakar Jaganathan
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Patent number: 11266941Abstract: Surface modified filter media, including surface modified filter media having enhanced performance characteristics, are provided. In some embodiments, a filter media may comprise two or more layers designed to enhance fluid separation efficiency. One or more of the layers may have at least a portion of a surface that is modified to alter and/or enhance the wettability of the surface with respect to a particular fluid. In certain embodiments involving a filter media including more than one surface modified layer, at least one surface modified layer may have a greater air permeability and/or mean flow pore size than that of another surface modified layer. Such a configuration of layers may result in the media having enhanced fluid separation properties compared to filter media that do not include such modified layers or configuration of layers, all other factors being equal. The filter media may be well-suited for a variety of applications, including filtering fuel, air, and lube oil.Type: GrantFiled: July 19, 2019Date of Patent: March 8, 2022Assignee: Hollingsworth & Vose CompanyInventors: Sneha Swaminathan, Howard Yu, Siqiang Zhu
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Patent number: 11247182Abstract: Fiber webs which are used in filter media are described herein. In some embodiments, the fiber webs include fibrillated fibers and optionally non-fibrillated fibers, amongst other optional components (e.g., binder resin). In some embodiments, the fiber webs include limited amounts of, or no, glass fiber. The respective characteristics and amounts of the fibrillated fibers are selected to impart desirable properties including mechanical properties and filtration properties (e.g., dust holding capacity and efficiency), amongst other benefits.Type: GrantFiled: April 30, 2019Date of Patent: February 15, 2022Assignee: Hollingsworth & Vose CompanyInventors: Howard Yu, Sneha Swaminathan
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Publication number: 20200346172Abstract: Fiber webs which are used in filter media are described herein. In some embodiments, the fiber webs include fibrillated fibers and optionally non-fibrillated fibers, amongst other optional components (e.g., binder resin). In some embodiments, the fiber webs include limited amounts of, or no, glass fiber. The respective characteristics and amounts of the fibrillated fibers are selected to impart desirable properties including mechanical properties and filtration properties (e.g., dust holding capacity and efficiency), amongst other benefits.Type: ApplicationFiled: July 15, 2020Publication date: November 5, 2020Applicant: Hollingsworth & Vose CompanyInventors: Howard Yu, Sneha Swaminathan
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Publication number: 20200328390Abstract: Battery separators and lead-acid batteries comprising battery separators are generally provided. The battery separators may have one or more features that enhances their suitability for use in lead-acid batteries. For example, the battery separators described herein may have one or more features that enhance their suitability for emerging flooded battery applications, such as extended flooded battery applications.Type: ApplicationFiled: April 12, 2019Publication date: October 15, 2020Applicant: Hollingsworth & Vose CompanyInventors: Praveen Yegya Raman Kumar, Nicolas Clement, Howard Yu
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Publication number: 20200238226Abstract: Fiber webs which are used in filter media are described herein. In some embodiments, the fiber webs include fibrillated fibers and optionally non-fibrillated fibers, amongst other optional components (e.g., binder resin). In some embodiments, the fiber webs include limited amounts of, or no, glass fiber. The respective characteristics and amounts of the fibrillated fibers are selected to impart desirable properties including mechanical properties and filtration properties (e.g., dust holding capacity and efficiency), amongst other benefits.Type: ApplicationFiled: April 20, 2020Publication date: July 30, 2020Applicant: Hollingsworth & Vose CompanyInventors: Howard Yu, Sneha Swaminathan
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Publication number: 20200054975Abstract: Filter media comprising a non-woven web including one or more binder components are provided. In some embodiments, the non-woven web comprises fibers and one or more binder components (e.g., monocomponent binder fibers, binder particles). The binder component(s) may impart strength and/or durability to the non-woven web without adversely affecting one or more filtration properties (e.g., air permeability, efficiency, dust holding capacity). In such cases, the non-woven web may function as both a filtration and support layer. For instance, the non-woven web may trap particulate matter and allow the filter media to be pleated and/or utilized in a filter element without the need for additional support structures. Filter media described herein may be particularly well-suited for applications such as fuel filtration, hydraulic filtration, lube filtration, gas turbine filtration, air filtration, and water filtration, though the media may also be used in other applications.Type: ApplicationFiled: August 20, 2018Publication date: February 20, 2020Applicant: Hollingsworth & Vose CompanyInventors: Howard Yu Belmont, Svetlana Krupnikov, Sneha Swaminathan
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Publication number: 20200009488Abstract: Surface modified filter media, including surface modified filter media having enhanced performance characteristics, are provided. In some embodiments, a filter media may comprise two or more layers designed to enhance fluid separation efficiency. One or more of the layers may have at least a portion of a surface that is modified to alter and/or enhance the wettability of the surface with respect to a particular fluid. In certain embodiments involving a filter media including more than one surface modified layer, at least one surface modified layer may have a greater air permeability and/or mean flow pore size than that of another surface modified layer. Such a configuration of layers may result in the media having enhanced fluid separation properties compared to filter media that do not include such modified layers or configuration of layers, all other factors being equal. The filter media may be well-suited for a variety of applications, including filtering fuel, air, and lube oil.Type: ApplicationFiled: July 19, 2019Publication date: January 9, 2020Applicant: Hollingsworth & Vose CompanyInventors: Sneha Swaminathan, Howard Yu, Siqiang Zhu
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Publication number: 20190388847Abstract: Fiber webs which are used in filter media are described herein. In some embodiments, the fiber webs include fibrillated fibers and optionally non-fibrillated fibers, amongst other optional components (e.g., binder resin). In some embodiments, the fiber webs include limited amounts of, or no, glass fiber. The respective characteristics and amounts of the fibrillated fibers are selected to impart desirable properties including mechanical properties and filtration properties (e.g., dust holding capacity and efficiency), amongst other benefits.Type: ApplicationFiled: April 30, 2019Publication date: December 26, 2019Applicant: Hollingsworth & Vose CompanyInventors: Howard Yu, Sneha Swaminathan
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Publication number: 20190336888Abstract: Surface modified filter media, including surface modified filter media having enhanced performance characteristics, are provided. In some embodiments, a filter media may comprise two or more layers designed to enhance fluid separation efficiency. One or more of the layers may have at least a portion of a surface that is modified to alter and/or enhance the wettability of the surface with respect to a particular fluid. In certain embodiments involving a filter media including more than one surface modified layer, at least one surface modified layer may have a greater air permeability and/or mean flow pore size than that of another surface modified layer. Such a configuration of layers may result in the media having enhanced fluid separation properties compared to filter media that do not include such modified layers or configuration of layers, all other factors being equal. The filter media may be well-suited for a variety of applications, including filtering fuel, air, and lube oil.Type: ApplicationFiled: December 20, 2018Publication date: November 7, 2019Applicant: Hollingsworth & Vose CompanyInventors: Sneha Swaminathan, Howard Yu
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Patent number: 10399024Abstract: Surface modified filter media, including surface modified filter media having enhanced performance characteristics, are provided. In some embodiments, a filter media may comprise two or more layers designed to enhance fluid separation efficiency. One or more of the layers may have at least a portion of a surface that is modified to alter and/or enhance the wettability of the surface with respect to a particular fluid. In certain embodiments involving a filter media including more than one surface modified layer, at least one surface modified layer may have a greater air permeability and/or mean flow pore size than that of another surface modified layer. Such a configuration of layers may result in the media having enhanced fluid separation properties compared to filter media that do not include such modified layers or configuration of layers, all other factors being equal. The filter media may be well-suited for a variety of applications, including filtering fuel, air, and lube oil.Type: GrantFiled: November 12, 2015Date of Patent: September 3, 2019Assignee: Hollingsworth & Vose CompanyInventors: Sneha Swaminathan, Howard Yu, Siqiang Zhu
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Patent number: 10322380Abstract: Fiber webs which are used in filter media are described herein. In some embodiments, the fiber webs include fibrillated fibers and optionally non-fibrillated fibers, amongst other optional components (e.g., binder resin). In some embodiments, the fiber webs include limited amounts of, or no, glass fiber. The respective characteristics and amounts of the fibrillated fibers are selected to impart desirable properties including mechanical properties and filtration properties (e.g., dust holding capacity and efficiency), amongst other benefits.Type: GrantFiled: October 18, 2016Date of Patent: June 18, 2019Assignee: Hollingsworth & Vose CompanyInventors: Howard Yu, Sneha Swaminathan
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Patent number: 10195542Abstract: Surface modified filter media, including surface modified filter media having enhanced performance characteristics, are provided. In some embodiments, a filter media may comprise two or more layers designed to enhance fluid separation efficiency. One or more of the layers may have at least a portion of a surface that is modified to alter and/or enhance the wettability of the surface with respect to a particular fluid. In certain embodiments involving a filter media including more than one surface modified layer, at least one surface modified layer may have a greater air permeability and/or mean flow pore size than that of another surface modified layer. Such a configuration of layers may result in the media having enhanced fluid separation properties compared to filter media that do not include such modified layers or configuration of layers, all other factors being equal. The filter media may be well-suited for a variety of applications, including filtering fuel, air, and lube oil.Type: GrantFiled: May 15, 2014Date of Patent: February 5, 2019Assignee: Hollingsworth & Vose CompanyInventors: Sneha Swaminathan, Howard Yu
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Publication number: 20170128892Abstract: Fiber webs which are used in filter media are described herein. In some embodiments, the fiber webs include fibrillated fibers and optionally non-fibrillated fibers, amongst other optional components (e.g., binder resin). In some embodiments, the fiber webs include limited amounts of, or no, glass fiber. The respective characteristics and amounts of the fibrillated fibers are selected to impart desirable properties including mechanical properties and filtration properties (e.g., dust holding capacity and efficiency), amongst other benefits.Type: ApplicationFiled: October 18, 2016Publication date: May 11, 2017Applicant: Hollingsworth & Vose CompanyInventors: Howard Yu, Sneha Swaminathan
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Patent number: 9511330Abstract: Fiber webs which are used in filter media are described herein. In some embodiments, the fiber webs include fibrillated fibers and optionally non-fibrillated fibers, amongst other optional components (e.g., binder resin). In some embodiments, the fiber webs include limited amounts of, or no, glass fiber. The respective characteristics and amounts of the fibrillated fibers are selected to impart desirable properties including mechanical properties and filtration properties (e.g., dust holding capacity and efficiency), amongst other benefits.Type: GrantFiled: December 19, 2013Date of Patent: December 6, 2016Assignee: Hollingsworth & Vose CompanyInventors: Howard Yu, Sneha Swaminathan
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Publication number: 20160136554Abstract: Surface modified filter media, including surface modified filter media having enhanced performance characteristics, are provided. In some embodiments, a filter media may comprise two or more layers designed to enhance fluid separation efficiency. One or more of the layers may have at least a portion of a surface that is modified to alter and/or enhance the wettability of the surface with respect to a particular fluid. In certain embodiments involving a filter media including more than one surface modified layer, at least one surface modified layer may have a greater air permeability and/or mean flow pore size than that of another surface modified layer. Such a configuration of layers may result in the media having enhanced fluid separation properties compared to filter media that do not include such modified layers or configuration of layers, all other factors being equal. The filter media may be well-suited for a variety of applications, including filtering fuel, air, and lube oil.Type: ApplicationFiled: November 12, 2015Publication date: May 19, 2016Applicant: Hollingsworth & Vose CompanyInventors: Sneha Swaminathan, Howard Yu, Siqiang Zhu
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Publication number: 20150328565Abstract: Surface modified filter media, including surface modified filter media having enhanced performance characteristics, are provided. In some embodiments, a filter media may comprise two or more layers designed to enhance fluid separation efficiency. One or more of the layers may have at least a portion of a surface that is modified to alter and/or enhance the wettability of the surface with respect to a particular fluid. In certain embodiments involving a filter media including more than one surface modified layer, at least one surface modified layer may have a greater air permeability and/or mean flow pore size than that of another surface modified layer. Such a configuration of layers may result in the media having enhanced fluid separation properties compared to filter media that do not include such modified layers or configuration of layers, all other factors being equal. The filter media may be well-suited for a variety of applications, including filtering fuel, air, and lube oil.Type: ApplicationFiled: May 15, 2014Publication date: November 19, 2015Applicant: Hollingsworth & Vose CompanyInventors: Sneha Swaminathan, Howard Yu
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Publication number: 20140224727Abstract: Fiber webs which are used in filter media are described herein. In some embodiments, the fiber webs include fibrillated fibers and optionally non-fibrillated fibers, amongst other optional components (e.g., binder resin). In some embodiments, the fiber webs include limited amounts of, or no, glass fiber. The respective characteristics and amounts of the fibrillated fibers are selected to impart desirable properties including mechanical properties and filtration properties (e.g., dust holding capacity and efficiency), amongst other benefits.Type: ApplicationFiled: December 19, 2013Publication date: August 14, 2014Applicant: Hollingsworth & Vose CompanyInventors: Howard Yu, Sneha Swaminathan