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Title: Nanofiber filter facemasks and cabin filters
Authors: Leung, WFW 
Issue Date: 6-Nov-2012
Source: US Patent 8,303,693 B2. Washington, DC: US Patent and Trademark Office, 2012.
Abstract: A filtration medium includes a fine filter layer having a plurality of nanofibers and a coarse filter layer having a plurality of microfibers attached to the fine filter layer. The coarse filter layer is positioned proximal to a direction of fluid flow, and the fine filter layer is positioned distal to the direction of fluid flow.
Rights: Assignee: The Hong Kong Polytechnic University.
Appears in Collections:Patent

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