Invention Grant
- Patent Title: Filter media for respiratory protection
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Application No.: US17249811Application Date: 2021-03-15
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Publication No.: US11331645B2Publication Date: 2022-05-17
- Inventor: Matthew A. Rankin
- 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 Steven A. Bern
- Main IPC: B01J20/00
- IPC: B01J20/00 ; B01J20/02 ; B01J20/28
Abstract:
A filter media composition includes a ferrihydrite material having an average pore size (BJH) in a range from 1 to 3 nm and a surface area (BET) of at least 200 m2/g or at least 250 m2/g or at least 300 m2/g.
Public/Granted literature
- US20210197170A1 FILTER MEDIA FOR RESPIRATORY PROTECTION Public/Granted day:2021-07-01
Information query
