Filter and air-conditioning device

This is a filter made from a collection of fibers, where some of the fibers are special. These special fibers generate negative electrical charges when they are stretched, and they are placed on at least one side of the filter. The invention specifically describes these charged fibers being held under tension by a frame, possibly woven into a fabric.

Why it matters: Filed before the global pandemic dramatically increased the focus on advanced air filtration and protective masks. This technology offers active electrostatic filtration, a feature now highly valued for improved indoor air quality and personal protection.

Status: Not in forceListed as no longer active. The specific reason is not in the record we hold.
How hard to build: ModeratePiezoelectric fibers, tensioning frame, custom fabric.

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