Search Patents
  • Fiber web having a high stiffness
    Patent number: 8083828
    Abstract: The fiber webs described herein may be incorporated into filter media and filter elements. The webs may exhibit a high permeability and stiffness, at a low thickness. The stiffness can be sufficient for the webs to be pleated to include sharp, well-defined peaks which can be maintained in a stable configuration during use.
    Type: Grant
    Filed: June 19, 2009
    Date of Patent: December 27, 2011
    Assignee: Hollingsworth & Vose Company
    Inventors: Bruce Smith, Sudhakar Jaganathan
  • Low boron containing microfiberglass filtration media
    Patent number: 6933252
    Abstract: The present invention provides nonwoven glass composites formed from an essentially boron free glass wool and an essentially boron free chopped glass fiber, used as a reinforcing material. The nonwoven glass composites are suitable for air filtration apparatus and can be used in the semiconductor industry where the elimination of boron from clean rooms is of importance.
    Type: Grant
    Filed: December 14, 2000
    Date of Patent: August 23, 2005
    Assignee: Hollingsworth & Vose Company
    Inventor: Mary E. Pierce
  • GLASS COMPOSITIONS WITH HIGH LEVELS OF BISMUTH OXIDE
    Publication number: 20120070729
    Abstract: The application describes glass compositions that includes more than 30 percent by weight of bismuth compounds, in particular bismuth oxide. Additionally, components, specifically battery separators, made from the glass compositions with high levels of bismuth are described.
    Type: Application
    Filed: September 21, 2011
    Publication date: March 22, 2012
    Applicant: HOLLINGSWORTH & VOSE COMPANY
    Inventors: John Wertz, Christopher Campion, Yuri Vulfson, Rene Gargan, Nicolas Clement
  • Fine fiber filter media and processes
    Patent number: 11458427
    Abstract: Fine fiber products including fiber webs, as well as related assemblies, systems and methods, are described. In some embodiments, fiber webs described herein may include fine fibers and relatively low amounts of degraded polymer formed during a fiber extrusion process. The fiber webs may be used for filter media applications.
    Type: Grant
    Filed: November 11, 2020
    Date of Patent: October 4, 2022
    Assignee: Hollingsworth & Vose Company
    Inventors: Stephen T. Cox, William S. Freeman, Abdoulaye Doucouré, John A. Wertz
  • FINE FIBER FILTER MEDIA AND PROCESSES
    Publication number: 20120318754
    Abstract: Fine fiber products including fiber webs, as well as related assemblies, systems and methods, are described. In some embodiments, fiber webs described herein may include fine fibers and relatively low amounts of degraded polymer formed during a fiber extrusion process. The fiber webs may be used for filter media applications.
    Type: Application
    Filed: June 20, 2012
    Publication date: December 20, 2012
    Applicant: Hollingsworth & Vose Company
    Inventors: Stephen T. Cox, William S. Freeman, Abdoulaye Doucoure, John A. Wertz
  • SEPARATORS FOR LEAD-ACID BATTERIES
    Publication number: 20200328390
    Abstract: 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: Application
    Filed: April 12, 2019
    Publication date: October 15, 2020
    Applicant: Hollingsworth & Vose Company
    Inventors: Praveen Yegya Raman Kumar, Nicolas Clement, Howard Yu
  • Waved filter media and elements
    Patent number: 9718020
    Abstract: 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: Grant
    Filed: September 30, 2013
    Date of Patent: August 1, 2017
    Assignee: Hollingsworth & Vose Company
    Inventors: David T. Healey, Richard Gahan
  • WAVED FILTER MEDIA AND ELEMENTS
    Publication number: 20120304602
    Abstract: 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: Application
    Filed: May 2, 2012
    Publication date: December 6, 2012
    Applicant: Hollingsworth & Vose Company
    Inventors: David Thomas Healey, Richard E. Gahan
  • Fine fiber filter media and processes
    Patent number: 10874962
    Abstract: Fine fiber products including fiber webs, as well as related assemblies, systems and methods, are described. In some embodiments, fiber webs described herein may include fine fibers and relatively low amounts of degraded polymer formed during a fiber extrusion process. The fiber webs may be used for filter media applications.
    Type: Grant
    Filed: October 25, 2018
    Date of Patent: December 29, 2020
    Assignee: Hollingsworth & Vose Company
    Inventors: Stephen T. Cox, William S. Freeman, Abdoulaye Doucouré, John A. Wertz
  • Fine fiber filter media and processes
    Patent number: 10155186
    Abstract: Fine fiber products including fiber webs, as well as related assemblies, systems and methods, are described. In some embodiments, fiber webs described herein may include fine fibers and relatively low amounts of degraded polymer formed during a fiber extrusion process. The fiber webs may be used for filter media applications.
    Type: Grant
    Filed: June 20, 2012
    Date of Patent: December 18, 2018
    Assignee: Hollingsworth & Vose Company
    Inventors: Stephen T. Cox, William S. Freeman, Abdoulaye Doucoure, John A. Wertz
  • WAVED FILTER MEDIA AND ELEMENTS
    Publication number: 20180015405
    Abstract: 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: Application
    Filed: May 22, 2017
    Publication date: January 18, 2018
    Applicant: Hollingsworth & Vose Company
    Inventors: David T. Healey, Richard E. Gahan
  • WAVED FILTER MEDIA AND ELEMENTS
    Publication number: 20110162337
    Abstract: 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: Application
    Filed: December 30, 2010
    Publication date: July 7, 2011
    Applicant: Hollingsworth & Vose Company
    Inventors: David Thomas Healey, Richard E. Gahan
  • Waved filter media and elements
    Patent number: 10758858
    Abstract: 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: Grant
    Filed: May 22, 2017
    Date of Patent: September 1, 2020
    Assignee: Hollingsworth & Vose Company
    Inventors: David T. Healey, Richard E. Gahan
  • FLUTABLE FIBER WEBS WITH HIGH DUST HOLDING CAPACITY
    Publication number: 20150004385
    Abstract: The fiber webs described herein may be incorporated into filter media and filter elements. The fiber webs may exhibit a high dust holding capacity. The fiber webs may also exhibit a low thickness. The fiber webs may be sufficiently flexible and/or deformable so that they may be processed to include a series of waves (also known as flutes) that extend along the cross-machine direction.
    Type: Application
    Filed: June 9, 2014
    Publication date: January 1, 2015
    Applicant: Hollingsworth & Vose Company
    Inventors: James M. Witsch, Douglas M. Guimond
  • Waved filter media and elements
    Patent number: 9687771
    Abstract: 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: Grant
    Filed: October 8, 2014
    Date of Patent: June 27, 2017
    Assignee: Hollingsworth & Vose Company
    Inventors: David T. Healey, Richard E. Gahan
  • FIBER WEBS INCLUDING SYNTHETIC FIBERS
    Publication number: 20150107208
    Abstract: 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: Application
    Filed: September 26, 2014
    Publication date: April 23, 2015
    Applicant: Hollingsworth & Vose Company
    Inventors: Juergen Battenfeld, Eszter Nofz, Nicolas Clement
  • Fine fiber filter media and processes
    Patent number: 10653986
    Abstract: Fine fiber products including fiber webs, as well as related assemblies, systems and methods, are described. In some embodiments, fiber webs described herein may include fine fibers and relatively low amounts of degraded polymer formed during a fiber extrusion process. The fiber webs may be used for filter media applications.
    Type: Grant
    Filed: October 5, 2015
    Date of Patent: May 19, 2020
    Assignee: Hollingsworth & Vose Company
    Inventors: Stephen T. Cox, William S. Freeman, Mark S. Millar, John A. Wertz
  • WAVED FILTER MEDIA AND ELEMENTS
    Publication number: 20080202078
    Abstract: 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: Application
    Filed: February 27, 2008
    Publication date: August 28, 2008
    Applicant: HOLLINGSWORTH & VOSE COMPANY
    Inventors: David Thomas Healey, Richard E. Gahan
  • Waved filter media and elements
    Patent number: 8882875
    Abstract: 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: Grant
    Filed: August 2, 2012
    Date of Patent: November 11, 2014
    Assignee: Hollingsworth & Vose Company
    Inventor: David T. Healey
  • BATTERY SEPARATORS WITH CONTROLLED PORE STRUCTURE
    Publication number: 20190157646
    Abstract: Disclosed are battery separators comprising glass fibers and having a basis weight (gsm), a specific surface area (m2/g), a density (gsm/mm) and a mean pore size (?m), which satisfy the equation disclosed herein, provided that: the specific surface area is less than 1.5 m2/g, or the density is greater than 180 gsm/mm. Also disclosed are batteries comprising the battery separators, and processes for making the separators.
    Type: Application
    Filed: November 16, 2018
    Publication date: May 23, 2019
    Applicant: Hollingsworth & Vose Company
    Inventors: Randall B. Keisler, Maxim Silin, John A. Wertz
Narrow Results

Filter by US Classification