ALEXANDRIA, Va., Feb. 12 -- United States Patent no. 12,220,674, issued on Feb. 11, was assigned to Koch-Glitsch LP (Wichita, Kan.).
"Countercurrent contacting devices" was invented by Izak Nieuwoudt (Wichita, Kan.) and Sergio Escobar (Wichita, Kan.).
According to the abstract* released by the U.S. Patent & Trademark Office: "The contacting device for countercurrent contacting of fluid streams and having a first pair of intersecting grids of spaced-apart and parallel deflector blades and a second pair of intersecting grids of spaced-apart and parallel deflector blades. The deflector blades in each one of the grids are interleaved with the deflector blades in the paired intersecting grid and may have uncut side portions that join them toge...