Search Patents
  • Waved filter media and elements
    Patent number: 8257459
    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: July 24, 2009
    Date of Patent: September 4, 2012
    Assignee: Hollingsworth & Vose Company
    Inventors: David T. Healey, Richard Gahan
  • FLUTABLE FIBER WEBS WITH HIGH DUST HOLDING CAPACITY
    Publication number: 20140047809
    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: August 16, 2013
    Publication date: February 20, 2014
    Applicant: Hollingsworth & Vose Company
    Inventors: James M. Witsch, Douglas M. Guimond
  • FLUTABLE FIBER WEBS WITH HIGH DUST HOLDING CAPACITY
    Publication number: 20130333341
    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: August 16, 2013
    Publication date: December 19, 2013
    Applicant: Hollingsworth & Vose Company
    Inventors: James M. Witsch, Douglas M. Guimond
  • Melt blown composite HEPA vacuum filter
    Patent number: 6514325
    Abstract: 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: Grant
    Filed: March 12, 2001
    Date of Patent: February 4, 2003
    Assignee: Hollingsworth & Vose Company
    Inventors: Stephen T. Cox, David T. Healey
  • FIBER WEBS INCLUDING SYNTHETIC FIBERS
    Publication number: 20130340398
    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: June 20, 2012
    Publication date: December 26, 2013
    Applicant: Hollingsworth & Vose Company
    Inventors: Juergen Battenfeld, Eszter Nofz, Nicolas Clement
  • Waved filter media and elements
    Patent number: 8202340
    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: March 6, 2009
    Date of Patent: June 19, 2012
    Assignee: Hollingsworth & Vose Company
    Inventors: David T. Healey, Richard Gahan
  • BATTERY SEPARATORS WITH CONTROLLED PORE STRUCTURE
    Publication number: 20220166107
    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: December 16, 2021
    Publication date: May 26, 2022
    Applicant: Hollingsworth & Vose Company
    Inventors: Randall B. Keisler, Maxim Silin, John A. Wertz
  • FLUTABLE FIBER WEBS WITH HIGH DUST HOLDING CAPACITY
    Publication number: 20120097032
    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: December 29, 2011
    Publication date: April 26, 2012
    Applicant: Hollingsworth & Vose Company
    Inventors: James M. Witsch, Douglas M. Guimond
  • FIBRILLATED FIBERS FOR LIQUID FILTRATION MEDIA
    Publication number: 20140224727
    Abstract: 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: Application
    Filed: December 19, 2013
    Publication date: August 14, 2014
    Applicant: Hollingsworth & Vose Company
    Inventors: Howard Yu, Sneha Swaminathan
  • Waved filter media and elements
    Patent number: 8197569
    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: December 30, 2010
    Date of Patent: June 12, 2012
    Assignee: Hollingsworth & Vose Company
    Inventors: David Thomas Healey, Richard E. Gahan
  • FILTER MEDIA WITH IMPROVED CONDUCTIVITY
    Publication number: 20160166960
    Abstract: Filter media are provided having improved conductivity to enhance filtration efficiency and/or dissipate static charge, and methods for making the same. In one exemplary embodiment, the filter media can include a filtration substrate, and at least one conductive coating disposed on at least a portion of the filtration substrate. In use, the conductive coating is coupled to an energy source and it is effective to emit ions when energy is delivered thereto to increase the efficiency of the filtration substrate and/or to dissipate or eliminate static charge generated during filtration.
    Type: Application
    Filed: November 11, 2015
    Publication date: June 16, 2016
    Applicant: Hollingsworth & Vose Company
    Inventors: Wai Ming Choi, Karin N. Soper
  • FIBRILLATED FIBERS FOR LIQUID FILTRATION MEDIA
    Publication number: 20190388847
    Abstract: 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: Application
    Filed: April 30, 2019
    Publication date: December 26, 2019
    Applicant: Hollingsworth & Vose Company
    Inventors: Howard Yu, Sneha Swaminathan
  • Flutable fiber webs with high dust holding capacity
    Patent number: 8236082
    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: Grant
    Filed: June 19, 2009
    Date of Patent: August 7, 2012
    Assignee: Hollingsworth & Vose Company
    Inventors: James M. Witsch, Douglas M. Guimond
  • FILTER MEDIA WITH IMPROVED CONDUCTIVITY
    Publication number: 20140190353
    Abstract: Filter media are provided having improved conductivity to enhance filtration efficiency and/or dissipate static charge, and methods for making the same. In one exemplary embodiment, the filter media can include a filtration substrate, and at least one conductive coating disposed on at least a portion of the filtration substrate. In use, the conductive coating is coupled to an energy source and it is effective to emit ions when energy is delivered thereto to increase the efficiency of the filtration substrate and/or to dissipate or eliminate static charge generated during filtration.
    Type: Application
    Filed: January 14, 2014
    Publication date: July 10, 2014
    Applicant: Hollingsworth & Vose Company
    Inventors: Wai Ming Choi, Karin N. Soper
  • FLUTABLE FIBER WEBS WITH HIGH DUST HOLDING CAPACITY
    Publication number: 20100319543
    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 19, 2009
    Publication date: December 23, 2010
    Applicant: Hollingsworth & Vose Company
    Inventors: James M. Witsch, Douglas M. Guimond
  • Flutable fiber webs with high dust holding capacity
    Patent number: 8778046
    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: Grant
    Filed: August 16, 2013
    Date of Patent: July 15, 2014
    Assignee: Hollingsworth & Vose Company
    Inventors: James M. Witsch, Douglas M. Guimond
  • FILTER MEDIA WITH IMPROVED CONDUCTIVITY
    Publication number: 20070028767
    Abstract: Filter media are provided having improved conductivity to enhance filtration efficiency and/or dissipate static charge, and methods for making the same. In one exemplary embodiment, the filter media can include a filtration substrate, and at least one conductive coating disposed on at least a portion of the filtration substrate. In use, the conductive coating is coupled to an energy source and it is effective to emit ions when energy is delivered thereto to increase the efficiency of the filtration substrate and/or to dissipate or eliminate static charge generated during filtration.
    Type: Application
    Filed: August 2, 2006
    Publication date: February 8, 2007
    Applicant: HOLLINGSWORTH & VOSE COMPANY
    Inventors: Wai Choi, Karin Soper
  • Flutable fiber webs with high dust holding capacity
    Patent number: 8778047
    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: Grant
    Filed: August 16, 2013
    Date of Patent: July 15, 2014
    Assignee: Hollingsworth & Vose Company
    Inventors: James M. Witsch, Douglas M. Guimond
  • Flutable fiber webs with high dust holding capacity
    Patent number: 8545590
    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: Grant
    Filed: December 29, 2011
    Date of Patent: October 1, 2013
    Assignee: Hollingsworth & Vose Company
    Inventors: James M. Witsch, Douglas M. Guimond
  • Battery separators with controlled pore structure
    Patent number: 10177360
    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: Grant
    Filed: November 21, 2014
    Date of Patent: January 8, 2019
    Assignee: Hollingsworth & Vose Company
    Inventors: Randall B. Keisler, Maxim Silin, John A. Wertz
Narrow Results

Filter by US Classification