ALEXANDRIA, Va., April 7 -- United States Patent no. 12,595,426, issued on April 7, was assigned to SHELL USA INC. (Houston).

"Process for removing contaminants from crude oil" was invented by Kai Jurgen Fischer (Amsterdam) and Sybe Sipma (Amsterdam).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention provides a process for the removal of contaminants from contaminated crude oil in a vessel. An organic solvent stream is provided to the vessel containing crude oil. After mixing, an organic solvent bottom phase is allowed to form. The bottom phase comprises at least a portion of the organic solvent stream and at least a portion of the contaminants. The bottom phase is removed from the vessel, w...