US Patent Issued to Oldcastle Infrastructure on March 31 for "Vaults, lids and trenches using recycled polystyrene" (Canadian Inventor)

ALEXANDRIA, Va., March 31 -- United States Patent no. 12,590,030, issued on March 31, was assigned to Oldcastle Infrastructure Inc. (Atlanta).

"Vaults, lids and trenches using recycled polystyrene" was invented by Charles Leblanc (Candiac, Canada).

According to the abstract* released by the U.S. Patent & Trademark Office: "Methods, compositions, and apparatuses are provided herein that utilize polystyrene from recycled products to make a high strength composite concrete that can be used for subgrade utility vaults, utility trenches, etc. Polystyrene is a widely-used plastic that can be collected and then densified at particular parameters including temperature to transform the polystyrene to a usable form. Then, the densified polystyrene ...