High performance, high efficiency filter

Gas separation: apparatus – Electric field separation apparatus – Electric charge produced by friction

Reexamination Certificate

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C055S486000, C055S521000, C096S057000, C096S058000, C210S493100, C210S493500, C977S726000

Reexamination Certificate

active

07097694

ABSTRACT:
A high performance, high efficiency filter is provided by a multi-stage filter having combinations of tribologically different fibers, nanofibers, and layering.

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