ALEXANDRIA, Va., Feb. 17 -- United States Patent no. 12,553,243, issued on Feb. 17.
"Filtration device with step" was invented by Karen M. Sager (Ridgewood, N.J.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A gutter guard for filtering water that enters a rain gutter on a building includes: a screen body configured to be positioned above a lowest portion of the rain gutter and having a plurality of openings that are penetrable by water. The screen body has a first surface, a second surface, and a channel positioned between the first surface and the second surface. The channel has a first wall adjacent to and extending in a first direction from the first surface, the first wall having a height in the first ...