US Patent Issued to TAIHEIYO CEMENT, THE UNIVERSITY OF TOKYO on March 24 for "Roadbed material production method" (Japanese Inventors)

ALEXANDRIA, Va., March 24 -- United States Patent no. 12,583,791, issued on March 24, was assigned to TAIHEIYO CEMENT Corp. (Tokyo) and THE UNIVERSITY OF TOKYO (Tokyo).

"Roadbed material production method" was invented by Takahito Nozaki (Tokyo), Aoi Fukuoka (Tokyo), Kouki Ichitsubo (Tokyo), Takayuki Hayakawa (Tokyo), Takafumi Noguchi (Tokyo) and Dianchao Wang (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "Provided is a method of producing a roadbed material from which less hexavalent chromium leaches out through use of a crushed product of a cementitious hardened body containing hexavalent chromium as a raw material. The method includes a carbonation treatment step of subjecting the crushed product o...