US Patent Issued to HOLCIM TECHNOLOGY on April 29 for "Process of preparing a cemented paste backfill material" (Swiss Inventors)

ALEXANDRIA, Va., June 9 -- United States Patent no. 12,286,377, issued on April 29, was assigned to HOLCIM TECHNOLOGY LTD (Zug, Switzerland).

"Process of preparing a cemented paste backfill material" was invented by Eric Brouard (Holderbank, Switzerland), Olivier Watt (Holderbank, Switzerland), Delphine Thomas (Holderbank, Switzerland) and Antoine Creyx (Holderbank, Switzerland).

According to the abstract* released by the U.S. Patent & Trademark Office: "A process of preparing a cemented paste backfill material, the material including ground mine tailings, a hydraulic binder and water, wherein the solids content of the backfill material is 70-82 wt.-%, the process including a) providing a dry premix, the premix including the hydraulic bin...