US Patent Issued to CHONGQING YUHUA NEW MATERIALS TECHNOLOGY on April 1 for "All-metal bridge plug with self-contained ball adapted to casings with various specifications" (Chinese Inventors)

ALEXANDRIA, Va., April 2 -- United States Patent no. 12,264,552, issued on April 1, was assigned to CHONGQING YUHUA NEW MATERIALS TECHNOLOGY Co. LTD. (Chongqing, China).

"All-metal bridge plug with self-contained ball adapted to casings with various specifications" was invented by Xiaohua Wang (Chongqing, China) and Tingji Tang (Chongqing, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "An all-metal bridge plug with a self-contained ball adapted to casings with various specifications, including a locking cap, an upper cone, a sealing ball, a metal sealing ring, a locking joint, a lower cone, a slip spider, a base, and a pull rod. One end of the pull rod may be connected with a seating tool, and the othe...