ALEXANDRIA, Va., Oct. 6 -- United States Patent no. 12,752,236, issued on Oct. 6, was assigned to Nissan Chemical America Corp. (Houston).

"Use of silica nanoparticles with triazine for H2S scavenging" was invented by Samuel James Maguire-Boyle (Spring, Texas) and John Edmond Southwell (Glen Ellyn, Ill.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A process to remove H2S from a stream comprising the steps of adding a silica nanoparticle composition and optionally a triazine, wherein the stream is selected from the group consisting of Oil streams, Gas streams, CO2 point source purification streams and Geothermal Energy System streams."

The patent was filed on Feb. 18, 2022, under Application No. 18/546,664...