ALEXANDRIA, Va., Feb. 17 -- United States Patent no. 12,552,724, issued on Feb. 17.

"Carbon sequestration using hyaloclastite, volcanic ash and pumice pozzolan, cement and concrete using same and method of making and using same" was invented by Romeo Ilarian Ciuperca (Atlanta).

According to the abstract* released by the U.S. Patent & Trademark Office: "The invention comprises a method of sequestering carbon dioxide. The method comprises delivering hyaloclastite, a volcanic glass or pumice to a mill capable of reducing the particle size of the hyaloclastite, a volcanic glass or pumice; processing the hyaloclastite, a volcanic glass or pumice in the mill so that the processed hyaloclastite, a volcanic glass or pumice has a volume-based mean...