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Patent number: 8357220Abstract: Multi-phase filter media, as well as related articles, components, filter elements, and methods, are disclosed.Type: GrantFiled: June 19, 2009Date of Patent: January 22, 2013Assignee: Hollingsworth & Vose CompanyInventors: Douglas M. Guimond, Mark Snyder
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Patent number: 8545587Abstract: Multi-phase filter media, as well as related articles, components, filter elements, and methods, are disclosed.Type: GrantFiled: November 27, 2011Date of Patent: October 1, 2013Assignee: Hollingsworth & Vose CompanyInventors: Douglas M. Guimond, Mark Snyder
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Publication number: 20100000411Abstract: Filter media, as well as related assemblies, systems and methods. Filter media may contain one or more layers formed of a meltblown material.Type: ApplicationFiled: July 1, 2009Publication date: January 7, 2010Applicant: Hollingsworth & Vose CompanyInventors: John A. Wertz, David T. Healey, William S. Freeman, John L. Manns, Mark Rowlands
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Patent number: 8608817Abstract: Filter media, as well as related assemblies, systems and methods. Filter media may contain one or more layers formed of a meltblown material.Type: GrantFiled: November 7, 2008Date of Patent: December 17, 2013Assignee: Hollingsworth & Vose CompanyInventors: John A. Wertz, David Thomas Healey, William S. Freeman, John L. Manns, Mark Rowlands
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Patent number: 8986432Abstract: Filter media, as well as related assemblies, systems and methods. Filter media may contain one or more layers formed of a meltblown material.Type: GrantFiled: July 1, 2009Date of Patent: March 24, 2015Assignee: Hollingsworth & Vose CompanyInventors: John A. Wertz, David T. Healey, William S. Freeman, John L. Manns, Mark Rowlands
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Patent number: 10478758Abstract: Filter media suitable for various applications (e.g., hydraulic) and related components, systems, and methods associated therewith are described. The filter media may include a fiber web having a mixture of glass fibers and fibers that are fibrillated. The fibrillated fibers, for example, may be formed of lyocell.Type: GrantFiled: April 13, 2015Date of Patent: November 19, 2019Assignee: Hollingsworth & Vose CompanyInventors: Juergen Battenfeld, William E. Widrig, Eszter Nofz
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Publication number: 20130025245Abstract: Various high performance, high efficiency filter media are provided that are cost effective and easy to manufacture. In particular, various filter media are provided having at least one layer with a waved configuration that results in an increased surface area, thereby enhancing various properties of the filter media. The filter media can be used to form a variety of filter elements for use in various applications.Type: ApplicationFiled: August 2, 2012Publication date: January 31, 2013Applicant: Hollingsworth & Vose CompanyInventor: David T. Healey
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Publication number: 20040035095Abstract: A filter media comprising a synthetic microfiber polymer fine fiber web wherein the diameter of the fibers is between about 0.8 to about 1.5 microns. The filter media is acceptable for use in ASHRAE applications. Constructions with a low DP backing, support or prefilter layers of coarse fiber provide large area filter webs of high efficiency and a stable and high threshold value of alpha above eleven.Type: ApplicationFiled: March 12, 2003Publication date: February 26, 2004Applicant: HOLLINGSWORTH & VOSE COMPANYInventor: David Thomas Healey
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Publication number: 20110162337Abstract: Various high performance, high efficiency filter media are provided that are cost effective and easy to manufacture. In particular, various filter media are provided having at least one layer with a waved configuration that results in an increased surface area, thereby enhancing various properties of the filter media. The filter media can be used to form a variety of filter elements for use in various applications.Type: ApplicationFiled: December 30, 2010Publication date: July 7, 2011Applicant: Hollingsworth & Vose CompanyInventors: David Thomas Healey, Richard E. Gahan
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Publication number: 20100107881Abstract: Various high performance, high efficiency filter media are provided that are cost effective and easy to manufacture. In particular, various filter media are provided having at least one layer with a waved configuration that results in an increased surface area, thereby enhancing various properties of the filter media. The filter media can be used to form a variety of filter elements for use in various applications.Type: ApplicationFiled: July 24, 2009Publication date: May 6, 2010Applicant: Hollingsworth & Vose CompanyInventors: David T. Healey, Richard Gahan
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Publication number: 20120304602Abstract: Various high performance, high efficiency filter media are provided that are cost effective and easy to manufacture. In particular, various filter media are provided having at least one layer with a waved configuration that results in an increased surface area, thereby enhancing various properties of the filter media. The filter media can be used to form a variety of filter elements for use in various applications.Type: ApplicationFiled: May 2, 2012Publication date: December 6, 2012Applicant: Hollingsworth & Vose CompanyInventors: David Thomas Healey, Richard E. Gahan
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Publication number: 20130340398Abstract: Filter media suitable for various applications and related components, systems, and methods associated therewith are described. The filter media may include a fiber web having a mixture comprising non-fibrillated synthetic fibers and fibrillated fibers, such as lyocell. The fiber web may also include multi-component fibers (e.g., bi-component fibers). In some embodiments, glass fibers are not incorporated into the fiber web.Type: ApplicationFiled: June 20, 2012Publication date: December 26, 2013Applicant: Hollingsworth & Vose CompanyInventors: Juergen Battenfeld, Eszter Nofz, Nicolas Clement
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Patent number: 8202340Abstract: Various high performance, high efficiency filter media are provided that are cost effective and easy to manufacture. In particular, various filter media are provided having at least one layer with a waved configuration that results in an increased surface area, thereby enhancing various properties of the filter media. The filter media can be used to form a variety of filter elements for use in various applications.Type: GrantFiled: March 6, 2009Date of Patent: June 19, 2012Assignee: Hollingsworth & Vose CompanyInventors: David T. Healey, Richard Gahan
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Patent number: 8882875Abstract: Various high performance, high efficiency filter media are provided that are cost effective and easy to manufacture. In particular, various filter media are provided having at least one layer with a waved configuration that results in an increased surface area, thereby enhancing various properties of the filter media. The filter media can be used to form a variety of filter elements for use in various applications.Type: GrantFiled: August 2, 2012Date of Patent: November 11, 2014Assignee: Hollingsworth & Vose CompanyInventor: David T. Healey
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Patent number: 8257459Abstract: Various high performance, high efficiency filter media are provided that are cost effective and easy to manufacture. In particular, various filter media are provided having at least one layer with a waved configuration that results in an increased surface area, thereby enhancing various properties of the filter media. The filter media can be used to form a variety of filter elements for use in various applications.Type: GrantFiled: July 24, 2009Date of Patent: September 4, 2012Assignee: Hollingsworth & Vose CompanyInventors: David T. Healey, Richard Gahan
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Patent number: 6514325Abstract: An electret filter media includes an additive or mixtures thereof that enhance the charge stability of the media. The filter media achieves acceptable alpha values for a range of filtration challenges without significant decay in alpha values over time. Preferred charge additives include fatty acid amides and mixtures thereof.Type: GrantFiled: March 12, 2001Date of Patent: February 4, 2003Assignee: Hollingsworth & Vose CompanyInventors: Stephen T. Cox, David T. Healey
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Patent number: 6524360Abstract: An electret filter media includes an additive or mixtures thereof that enhance the charge stability of the media. The filter media achieves acceptable alpha values for a range of filtration challenges without significant decay in alpha values over time. Preferred charge additives include fatty acid amides and mixtures thereof.Type: GrantFiled: February 14, 2001Date of Patent: February 25, 2003Assignee: Hollingsworth & Vose CompanyInventors: Stephen T. Cox, David T. Healey
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Patent number: 8197569Abstract: Various high performance, high efficiency filter media are provided that are cost effective and easy to manufacture. In particular, various filter media are provided having at least one layer with a waved configuration that results in an increased surface area, thereby enhancing various properties of the filter media. The filter media can be used to form a variety of filter elements for use in various applications.Type: GrantFiled: December 30, 2010Date of Patent: June 12, 2012Assignee: Hollingsworth & Vose CompanyInventors: David Thomas Healey, Richard E. Gahan
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Publication number: 20140130469Abstract: Fiber webs that may be used as filter media are provided. In some embodiments, the filter media may include multiple layers. Each layer may be designed to have separate functions in the filter media. For example, a first layer may be provided for improving dust holding capacity, a second layer for improving efficiency, and a third layer for providing support and strength to the media. By designing the layers to have separate functions, each layer may be optimized to enhance its function without negatively impacting the performance of another layer of the media.Type: ApplicationFiled: February 25, 2013Publication date: May 15, 2014Applicant: Hollingsworth & Vose CompanyInventors: Máté Nagy, Sven Siegle
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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