ALEXANDRIA, Va., Feb. 24 -- United States Patent no. 12,558,759, issued on Feb. 24, was assigned to SAUDI ARABIAN OIL COMPANY (Dhahran, Saudi Arabia).
"Usage of ferrochrome slag with optimized particle size as a blasting abrasive" was invented by Shaj K. Manjalivalapil (Abqaiq, Saudi Arabia), Sangki Chi (Dhahran, Saudi Arabia), Abbas Y. Al-Hulaimy (Al-Mubarraz, Saudi Arabia) and Ebad Ul Haque (Dhahran, Saudi Arabia).
According to the abstract* released by the U.S. Patent & Trademark Office: "A blasting abrasive and a method of use are provided. The blasting abrasive includes a ferrochrome slag having a composition of SiO2 in a range of from about 30 to 40 wt % (weight percent); Al2O3 in a range of from about 25 to 35 wt %; of Fe2O3, Cr2O3...