DRY FORMED FILTERS AND METHODS OF MAKING THE SAME

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United States of America Patent

APP PUB NO 20140360930A1
SERIAL NO

14271271

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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The disclosure includes, in some embodiments, a filter element that includes a first porous outer layer formed from a nonwoven material, a second porous outer layer formed from a nonwoven material, and at least one inner porous layer formed from a high loft nonwoven material (or other suitable material) disposed between the first porous outer layer and the second porous outer layer. The high loft nonwoven material has a three dimensional matrix formed by entangled and bonded fibers that cooperate to form a plurality of three dimensional interstices between the fibers for maintaining an open and tortuous flow path for fluid to pass through. The filter element also includes filter aid particles dispersed in the interstices of the high loft nonwoven material.

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Patent Owner(s)

Patent OwnerAddress
GUSMER ENTERPRISES INC27 NORTH AVENUE EAST P O BOX 846 CRANFORD NJ 07016

International Classification(s)

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  • 2014 Application Filing Year
  • B01D Class
  • 3939 Applications Filed
  • 3248 Patents Issued To-Date
  • 82.46 % Issued To-Date
Click to zoom InYear of Issuance% of Matters IssuedCumulative IssuancesYearly Issuances2014201520162017201820192020202120222023202420250255075100

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Menzies, Robert Waupaca, US 7 8
Tinkham, Robert L Appleton, US 4 7

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Patent Citation Ranking

  • 2 Citation Count
  • B01D Class
  • 9.70 % this patent is cited more than
  • 11 Age
Citation count rangeNumber of patents cited in rangeNumber of patents cited in various citation count ranges1891236313107503136434301 - 1011 - 2021 - 3031 - 4041 - 5051 - 6061 - 7071 - 8081 - 9091 - 100100 +01002003004005006007008009001000110012001300

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