Gas filtration media

Gas separation: processes – Filtering

Reexamination Certificate

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Details

C095S285000, C055S522000, C055S523000, C055S524000, C055S528000, C210S650000, C210S503000, C210S510100

Reexamination Certificate

active

07604687

ABSTRACT:
A gas filtration media comprises a microporous membrane. The microporous membrane includes an ultrahigh molecular weight polyethylene (UHMWPE), an inorganic material, wherein the ratio of inorganic material to polymer is in the range of 4:1 to 1:4, and less than 30% by weight of the membrane being a processing oil.

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