Patents by Inventor Anitha M. Mathew
Anitha M. 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).
-
Patent number: 12017177Abstract: 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: GrantFiled: April 11, 2022Date of Patent: June 25, 2024Assignee: Donaldson Company, Inc.Inventors: Gary J. Rocklitz, Robert M. Rogers, Daniel E. Adamek, Ming Ouyang, Anitha M. Mathew
-
Patent number: 11612845Abstract: 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: GrantFiled: September 24, 2020Date of Patent: March 28, 2023Assignee: Donaldson Company, Inc.Inventors: Gary J. Rocklitz, Robert M. Rogers, Ming Ouyang, Anitha M. Mathew
-
Publication number: 20220314156Abstract: 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: ApplicationFiled: April 11, 2022Publication date: October 6, 2022Inventors: Gary J. Rocklitz, Robert M. Rogers, Daniel E. Adamek, Ming Ouyang, Anitha M. Mathew
-
Patent number: 11298645Abstract: 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: GrantFiled: January 6, 2020Date of Patent: April 12, 2022Assignee: Donaldson Company, Inc.Inventors: Gary J. Rocklitz, Robert M. Rogers, Daniel E. Adamek, Ming Ouyang, Anitha M. Mathew
-
Publication number: 20210077939Abstract: 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: ApplicationFiled: September 24, 2020Publication date: March 18, 2021Inventors: Gary J. Rocklitz, Robert M. Rogers, Ming Ouyang, Anitha M. Mathew
-
Patent number: 10786774Abstract: 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: GrantFiled: December 8, 2016Date of Patent: September 29, 2020Assignee: Donaldson Company, Inc.Inventors: Gary J. Rocklitz, Robert M. Rogers, Ming Ouyang, Anitha M. Mathew
-
Publication number: 20200139290Abstract: 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: ApplicationFiled: January 6, 2020Publication date: May 7, 2020Inventors: Gary J. Rocklitz, Robert M. Rogers, Daniel E. Adamek, Ming Ouyang, Anitha M. Mathew
-
Patent number: 10525397Abstract: 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: GrantFiled: July 28, 2016Date of Patent: January 7, 2020Assignee: Donaldson Company, Inc.Inventors: Gary J. Rocklitz, Robert M. Rogers, Daniel E. Adamek, Ming Ouyang, Anitha M. Mathew
-
Patent number: 10363513Abstract: A method form forming fluted filtration media is provided. The method includes forming fluted filtration media having a repeating pattern of flutes wherein at least one flute in the repeating pattern of flutes comprises at least one ridge in a flute period between adjacent same side peaks, the flutes showing a tapered cross sectional area.Type: GrantFiled: August 3, 2010Date of Patent: July 30, 2019Assignee: Donaldson Company, Inc.Inventors: Ted A. Moe, Gregory J. Fesenmaier, Gary J. Rocklitz, Ming Ouyang, Anitha M. Mathew
-
Patent number: 9808752Abstract: A method form forming fluted filtration media is provided. The method includes forming fluted filtration media having a repeating pattern of flutes wherein at least one flute in the repeating pattern of flutes comprises at least one ridge in a flute period between adjacent same side peaks. The repeating pattern of flutes can comprise at least one flute having at least two ridges provided in a flute period between adjacent same side peaks. An apparatus for forming fluted filtration media is provided.Type: GrantFiled: February 3, 2009Date of Patent: November 7, 2017Assignee: Donaldson Company, Inc.Inventors: Ted A. Moe, Gregory J. Fesenmaier, Gary J. Rocklitz, Ming Ouyang, Anitha M. Mathew
-
Publication number: 20170216758Abstract: 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: ApplicationFiled: December 8, 2016Publication date: August 3, 2017Inventors: Gary J. Rocklitz, Robert M. Rogers, Ming Ouyang, Anitha M. Mathew
-
Publication number: 20170028341Abstract: 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: ApplicationFiled: July 28, 2016Publication date: February 2, 2017Inventors: Gary J. Rocklitz, Robert M. Rogers, Daniel E. Adamek, Ming Ouyang, Anitha M. Mathew
-
Patent number: 8734557Abstract: 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: GrantFiled: January 17, 2013Date of Patent: May 27, 2014Assignee: Donaldson Company, Inc.Inventors: Gary J. Rocklitz, Robert M. Rogers, Ming Ouyang, Anitha M. Mathew
-
Patent number: 8545589Abstract: 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 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 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 of the first face and the second face of the media pack passes through media to provide filtration of the fluid. The filtration media pack can be provided with increased filtration media compared with commonly used z-media packs.Type: GrantFiled: June 26, 2008Date of Patent: October 1, 2013Assignee: Donaldson Company, Inc.Inventors: Gary J. Rocklitz, Robert M. Rogers, Daniel Adamek, Ming Ouyang, Anitha M. Mathew
-
Publication number: 20130228077Abstract: 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: ApplicationFiled: January 17, 2013Publication date: September 5, 2013Applicant: DONALDSON COMPANY, INC.Inventors: Gary J. Rocklitz, Robert M. Rogers, Ming Ouyang, Anitha M. Mathew
-
Patent number: 8361183Abstract: 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: GrantFiled: May 18, 2011Date of Patent: January 29, 2013Assignee: Donaldson Company, Inc.Inventors: Gary J. Rocklitz, Robert M. Rogers, Ming Ouyang, Anitha M. Mathew
-
Publication number: 20120196733Abstract: A method form forming fluted filtration media is provided. The method includes forming fluted filtration media having a repeating pattern of flutes wherein at least one flute in the repeating pattern of flutes comprises at least one ridge in a flute period between adjacent same side peaks, the flutes showing a tapered cross sectional area.Type: ApplicationFiled: August 3, 2010Publication date: August 2, 2012Applicant: DONALDSON COMPANY, INC.Inventors: Ted A. Moe, Gregory J. Fesenmaier, Gary J. Rocklitz, Ming Ouyang, Anitha M. Mathew
-
Publication number: 20110277431Abstract: 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: ApplicationFiled: May 18, 2011Publication date: November 17, 2011Applicant: DONALDSON COMPANY , INC.Inventors: Gary J. Rocklitz, Robert M. Rogers, Ming Ouyang, Anitha M. Mathew
-
Patent number: 7959702Abstract: 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: GrantFiled: February 4, 2008Date of Patent: June 14, 2011Assignee: Donaldson Company, Inc.Inventors: Gary J. Rocklitz, Robert M. Rogers, Ming Ouyang, Anitha M. Mathew
-
Publication number: 20090211696Abstract: A method form forming fluted filtration media is provided. The method includes forming fluted filtration media having a repeating pattern of flutes wherein at least one flute in the repeating pattern of flutes comprises at least one ridge in a flute period between adjacent same side peaks. The repeating pattern of flutes can comprise at least one flute having at least two ridges provided in a flute period between adjacent same side peaks. An apparatus for forming fluted filtration media is provided.Type: ApplicationFiled: February 3, 2009Publication date: August 27, 2009Inventors: Ted A. Moe, Gregory J. Fesenmaier, Gary J. Rocklitz, Ming Ouyang, Anitha M. Mathew