Invention Grant
- Patent Title: Air filter with visual filter life indicator zone and sorbent-loaded visual reference zone
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Application No.: US16348254Application Date: 2016-11-17
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Publication No.: US11027231B2Publication Date: 2021-06-08
- Inventor: Liang Cheng , Andrew R. Fox , Himanshu Jasuja , Zhiqun Zhang
- Applicant: 3M INNOVATIVE PROPERTIES COMPANY
- Applicant Address: US MN St. Paul
- Assignee: 3M INNOVATIVE PROPERTIES COMPANY
- Current Assignee: 3M INNOVATIVE PROPERTIES COMPANY
- Current Assignee Address: US MN St. Paul
- Agent Kenneth B. Wood
- International Application: PCT/CN2016/106223 WO 20161117
- International Announcement: WO2018/090279 WO 20180524
- Main IPC: B01D46/00
- IPC: B01D46/00 ; B01D53/00 ; B01D46/10 ; B01D29/13 ; B01D46/52 ; B01D35/143 ; B01D53/04
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).
Public/Granted literature
- US20190314751A1 AIR FILTER WITH VISUAL FILTER LIFE INDICATOR ZONE AND SORBENT-LOADED VISUAL REFERENCE ZONE Public/Granted day:2019-10-17
Information query
