ALEXANDRIA, Va., Feb. 24 -- United States Patent no. 12,559,397, issued on Feb. 24.
"Submerged membrane unit with single drop aeration" was invented by Derek Michael Shires (Bartlett, Texas).
According to the abstract* released by the U.S. Patent & Trademark Office: "A device including a housing having a first side, a second side opposed to the first side, and a wall disposed between the first side and the second side. The wall forms at least a partially enclosed space inside the housing. The device also includes a membrane mounted to the wall inside the housing. The device also includes a drop pipe disposed inside the housing and through or around the membrane, the drop pipe having a proximal end and a distal end, the distal end being cl...