Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
June 18, 2019
Patent Application Number
14751161
Date Filed
June 26, 2015
Patent Citations Received
Patent Primary Examiner
Patent abstract
A mask against atmospheric PM 2.5 includes a mask body and a filter layer located in the mask body. The filter layer includes a carbon nanotube structure. The carbon nanotube structure includes a plurality of carbon nanotube films stacked and crossed with each other. The carbon nanotube structure includes a plurality of micropores. A diameter of the micropores ranges from about 1 micrometer to about 2.5 micrometers.
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