US Patent 11686098 Filtration device

A gutter guard for filtering water that enters a rain gutter on a building, the gutter guard having a barrier member configured to be positioned above a lowest portion of the rain gutter and having a plurality of openings that are penetrable by water. The barrier member having first members that extend along a first direction; second members that extend along a second direction that is non-parallel to the first direction; a third member made of an ion-dispersing material; and a protrusion extending from the barrier member.