AIR FILTER WITH VISUAL FILTER LIFE INDICATOR ZONE AND SORBENT-LOADED VISUAL REFERENCE ZONE

Title:

AIR FILTER WITH VISUAL FILTER LIFE INDICATOR ZONE AND SORBENT-LOADED VISUAL REFERENCE ZONE

Document Type and Number:

WIPO Patent Application WO/2018/090279

Kind Code:

A1

Abstract:

An air filter (1) comprises an air filter media (10) with a sorbent-free area (20) that provides a visual filter life indicator zone (30) and with a sorbent-loaded area (26) that provides a visual reference zone (27).

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Inventors:

CHENG LIANG (CN)
FOX ANDREW (CN)
JASUJA HIMANSHU (US)
ZHANG ZHIQUN (US)

Application Number:

PCT/CN2016/106223

Publication Date:

May 24, 2018

Filing Date:

November 17, 2016

Export Citation:

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Assignee:

3M INNOVATIVE PROPERTIES CO (US)
CHENG LIANG (CN)

International Classes:

B01D46/00

Foreign References:

CN105521664A	2016-04-27
JP2000246043A	2000-09-12
CN102458583A	2012-05-16
CN104415624A	2015-03-18
US20040083896A1	2004-05-06
US7442237B1	2008-10-28
JPH02126856A	1990-05-15

Attorney, Agent or Firm:

KING & WOOD MALLESONS (CN)

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