US Patent Issued to SAUDI ARABIAN OIL, CHENGDU DONGWEI TECHNOLOGY on June 2 for "Producing polycrystalline diamond compact (PDC) drill bits with catalyst-free and substrate-free PDC cutters" (Saudi Arabia, Chinese Inventors)

ALEXANDRIA, Va., June 2 -- United States Patent no. 12,643,146, issued on June 2, was assigned to SAUDI ARABIAN OIL COMPANY (Dhahran, Saudi Arabia) and CHENGDU DONGWEI TECHNOLOGY Co. LTD (Chengdu, China).

"Producing polycrystalline diamond compact (PDC) drill bits with catalyst-free and substrate-free PDC cutters" was invented by Guodong Zhan (Dhahran, Saudi Arabia), Jianhui Xu (Dhahran, Saudi Arabia), Timothy E. Moellendick (Dhahran, Saudi Arabia) and Duanwei He (Chengdu, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "Methods for forming a polycrystalline diamond compact (PDC) drill bit from catalyst-free synthesized polycrystalline diamonds are described. The polycrystalline diamonds are deposited wi...