ALEXANDRIA, Va., Jan. 29 -- United States Patent no. 12,208,371, issued on Jan. 28, was assigned to KING SAUD UNIVERSITY (Riyadh, Saudi Arabia).

"Imidazolium ionic liquids made using cardanol extracted from cashew nutshell oil to enhance crude oil recovery in oilfields" was invented by Ayman M. Atta (Riyadh, Saudi Arabia), Hamad A. Al-Lohedan (Riyadh, Saudi Arabia), Abdelrahman O. Ezzat (Riyadh, Saudi Arabia) and Ali K. Aldalbahi (Riyadh, Saudi Arabia).

According to the abstract* released by the U.S. Patent & Trademark Office: "Modified chemical structures of cardanol extracted from cashew nut shell oil, and the use of the same to prepare imidazolium ionic liquids (IILs). The IILs can be used to prepare different types of silica, magnetit...