ALEXANDRIA, Va., June 17 -- United States Patent no. 12,312,288, issued on May 27, was assigned to IFP ENERGIES NOUVELLES (Rueil-Malmaison, France).

"Gas/liquid oligomerization reactor comprising transverse internals" was invented by Frederic Augier (Rueil-Malmaison, France), Alexandre Vonner (Rueil-Malmaison, France) and Pedro Maximiano Raimundo (Rueil-Malmaison, France).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention relates to the field of gas/liquid reactors making possible the oligomerization of ethylene to give linear olefins by homogeneous catalysis with a reaction chamber comprising transverse internals capable of slowing down the ascent of the gaseous ethylene in the said reactor...