Patents by Inventor Anitha Mathew

Anitha Mathew 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).

  • Air filtration media pack, filter element, air filtration media, and methods
    Patent number: 9517430
    Abstract: An air filtration media pack is provided having a plurality of layers of single facer media. The layer of single facer media includes a fluted sheet, a facing sheet, and a plurality of flutes extending between the fluted sheet and the facing sheet and having a flute length extending from a first face of the filtration media pack to a second face of the filtration media pack. A first portion of the plurality of flutes are closed to unfiltered air flowing into the first portion of the plurality of flutes, and a second portion of the plurality of flutes are closed to unfiltered air from flowing out of the second portion of the plurality of flutes so that air passing into one of the first face and the second face of the media pack and out the other of the first face and the second face of the media pack passes through media to provide filtration of the air. The fluted sheet includes repeating internal peaks facing toward the facing sheet and repeating external peaks facing away from the facing sheet.
    Type: Grant
    Filed: March 5, 2014
    Date of Patent: December 13, 2016
    Assignee: Donaldson Company, Inc.
    Inventors: Gary J. Rocklitz, Robert M. Rogers, Ming Ouyang, Anitha Mathew
  • Filtration media pack, filter element, and methods
    Patent number: 9433884
    Abstract: A filtration media pack is provided having a plurality of layers of single facer media. The layer of single facer media includes a fluted sheet, a facing sheet, and a plurality of flutes extending between the fluted sheet and the facing sheet and having a flute length extending from a first face to a second face of the filtration media pack. A first portion of the plurality of flutes are closed to unfiltered fluid flowing into the first portion of the plurality of flutes, and a second portion of the plurality of flutes are closed to unfiltered fluid flowing out of the second portion of the plurality of flutes so that fluid passing into one of the first face and the second face of the media pack and out the other face of the media pack passes through media to provide filtration of the fluid.
    Type: Grant
    Filed: September 30, 2013
    Date of Patent: September 6, 2016
    Assignee: Donaldson Company, Inc.
    Inventors: Gary J. Rocklitz, Robert M. Rogers, Daniel E. Adamek, Ming Ouyang, Anitha Mathew
  • AIR FILTRATION MEDIA PACK, FILTER ELEMENT, AIR FILTRATION MEDIA, AND METHODS
    Publication number: 20140325946
    Abstract: An air filtration media pack is provided having a plurality of layers of single facer media. The layer of single facer media includes a fluted sheet, a facing sheet, and a plurality of flutes extending between the fluted sheet and the facing sheet and having a flute length extending from a first face of the filtration media pack to a second face of the filtration media pack. A first portion of the plurality of flutes are closed to unfiltered air flowing into the first portion of the plurality of flutes, and a second portion of the plurality of flutes are closed to unfiltered air from flowing out of the second portion of the plurality of flutes so that air passing into one of the first face and the second face of the media pack and out the other of the first face and the second face of the media pack passes through media to provide filtration of the air. The fluted sheet includes repeating internal peaks facing toward the facing sheet and repeating external peaks facing away from the facing sheet.
    Type: Application
    Filed: March 5, 2014
    Publication date: November 6, 2014
    Applicant: DONALDSON COMPANY, INC.
    Inventors: Gary J. Rocklitz, Robert M. Rogers, Ming Ouyang, Anitha Mathew
  • FILTRATION MEDIA PACK, FILTER ELEMENT, AND METHODS
    Publication number: 20140182251
    Abstract: A filtration media pack is provided having a plurality of layers of single facer media. The layer of single facer media includes a fluted sheet, a facing sheet, and a plurality of flutes extending between the fluted sheet and the facing sheet and having a flute length extending from a first face to a second face of the filtration media pack. A first portion of the plurality of flutes are closed to unfiltered fluid flowing into the first portion of the plurality of flutes, and a second portion of the plurality of flutes are closed to unfiltered fluid flowing out of the second portion of the plurality of flutes so that fluid passing into one of the first face and the second face of the media pack and out the other face of the media pack passes through media to provide filtration of the fluid.
    Type: Application
    Filed: September 30, 2013
    Publication date: July 3, 2014
    Applicant: Donaldson Company, Inc.
    Inventors: Gary J. Rocklitz, Robert M. Rogers, Daniel E. Adamek, Ming Ouyang, Anitha Mathew