ALEXANDRIA, Va., March 3 -- United States Patent no. 12,565,390, issued on March 3, was assigned to Jenike & Johanson Inc. (Tyngsboro, Mass.).

"System and method for feeding bulk material into a pressurized environment" was invented by Jayant V. Khambekar (Katy, Texas), David A. Craig (Andover, Mass.), Thomas G. Troxel (Atascadero, Calif.) and T. Anthony Royal (Nashua, N.H.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A system and method for feeding a high volume of low-bulk-density and pressure-sensitive feedstocks into a pressurized environment. The system includes a lock hopper filling system, one or more lock hoppers, a feed bin, and a feeder. The methods involve using such a system to feed bulk materi...