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  • FILTER MEDIA WITH FIBRILLATED FIBERS
    Publication number: 20150321124
    Abstract: 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: Application
    Filed: April 13, 2015
    Publication date: November 12, 2015
    Applicant: Hollingsworth & Vose Company
    Inventors: Juergen Battenfeld, William E. Widrig, Eszter Nofz
  • BATTERY SEPARATOR WITH RIBS AND A METHOD OF CASTING THE RIBS ON THE SEPARATOR
    Publication number: 20170294639
    Abstract: The present disclosure provides a method of casting ribs on substrate, said method comprising acts of, mounting applicator comprising plurality of nozzles and polymer filled into the applicator, placing the substrate below the nozzles of the applicator, applying pressure onto the melt polymer to cast plurality of polymer ribs of predetermined shape on the substrate, and cooling the substrate casted with ribs.
    Type: Application
    Filed: September 11, 2014
    Publication date: October 12, 2017
    Applicant: HOLLINGSWORTH & VOSE COMPANY
    Inventor: Gubbi Krishnappa Natesh
  • FINE FIBER FILTER MEDIA AND PROCESSES
    Publication number: 20190126177
    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: October 25, 2018
    Publication date: May 2, 2019
    Applicant: Hollingsworth & Vose Company
    Inventors: Stephen T. Cox, William S. Freeman, Abdoulaye Doucouré, John A. Wertz
  • Battery separators with controlled pore structure
    Patent number: 11239531
    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. Also disclosed are batteries comprising the battery separators, and processes for making the separators.
    Type: Grant
    Filed: November 16, 2018
    Date of Patent: February 1, 2022
    Assignee: Hollingsworth & Vose Company
    Inventors: Randall B. Keisler, Maxim Silin, John A. Wertz
  • FINE FIBER FILTER MEDIA AND PROCESSES
    Publication number: 20120152821
    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: December 17, 2010
    Publication date: June 21, 2012
    Applicant: Hollingsworth & Vose Company
    Inventors: Stephen T. Cox, William S. Freeman, Mark S. Millar
  • Pool and spa filter media
    Patent number: 6419839
    Abstract: A carded nonwoven filter media comprising one or more layers of core-sheath fibers wherein the sheath portion of a fiber is bonded to one or more adjacent core fibers is disclosed. In a preferred embodiment, the nonwoven filter media includes an antimicrobial fiber component.
    Type: Grant
    Filed: August 15, 2000
    Date of Patent: July 16, 2002
    Assignee: Hollingsworth & Vose Company
    Inventors: Stephen T. Cox, Dino E. Abelli
  • WAVED FILTER MEDIA AND ELEMENTS
    Publication number: 20150121823
    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: October 8, 2014
    Publication date: May 7, 2015
    Applicant: Hollingsworth & Vose Company
    Inventor: David T. Healey
  • FINE FIBER FILTER MEDIA AND PROCESSES
    Publication number: 20160158677
    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: October 5, 2015
    Publication date: June 9, 2016
    Applicant: Hollingsworth & Vose Company
    Inventors: Stephen T. Cox, William S. Freeman, Mark S. Millar, John A. Wertz
  • BATTERY COMPONENTS WITH LEACHABLE METAL IONS AND USES THEREOF
    Publication number: 20130071723
    Abstract: The disclosure describes compositions and methods for producing a change in the voltage at which hydrogen gas is produced in a lead acid battery. The compositions and methods relate to producing a concentration of one or more metal ions in the lead acid battery electrolyte.
    Type: Application
    Filed: September 21, 2011
    Publication date: March 21, 2013
    Applicant: Hollingsworth & Vose Company
    Inventors: John Wertz, Christopher Campion, Rene Gargan, Mohan Rajaram, Svetlana Krupnikov
  • FIBER WEB HAVING A HIGH STIFFNESS
    Publication number: 20120048797
    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: Application
    Filed: November 10, 2011
    Publication date: March 1, 2012
    Applicant: Hollingsworth & Vose Company
    Inventors: Bruce Smith, Sudhakar Jaganathan
  • Meltblown filter medium, related applications and uses
    Patent number: 8986432
    Abstract: Filter media, as well as related assemblies, systems and methods. Filter media may contain one or more layers formed of a meltblown material.
    Type: Grant
    Filed: July 1, 2009
    Date of Patent: March 24, 2015
    Assignee: Hollingsworth & Vose Company
    Inventors: John A. Wertz, David T. Healey, William S. Freeman, John L. Manns, Mark Rowlands
  • ABSORBENT AND/OR ADSORPTIVE FILTER MEDIA
    Publication number: 20130340613
    Abstract: Filter media suitable for various applications and related components, systems, and methods associated therewith are described. The filter media may include a composite structure having a mixture comprising fibrillated fibers (e.g., lyocell) and functional particles. The filter media may exhibit favorable absorption and/or adsorption characteristics.
    Type: Application
    Filed: December 21, 2012
    Publication date: December 26, 2013
    Applicant: Hollingsworth & Vose Company
    Inventors: Svetlana Krupnikov, Erich Jurgen Gaudry Sada
  • WAVED FILTER MEDIA AND ELEMENTS
    Publication number: 20140157742
    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: September 30, 2013
    Publication date: June 12, 2014
    Applicant: Hollingsworth & Vose Company
    Inventors: David T. Healey, Richard Gahan
  • WAVED FILTER MEDIA AND ELEMENTS
    Publication number: 20130025245
    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: August 2, 2012
    Publication date: January 31, 2013
    Applicant: Hollingsworth & Vose Company
    Inventor: David T. Healey
  • 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
  • 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
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