ALEXANDRIA, Va., June 10 -- United States Patent no. 12,292,187, issued on May 6, was assigned to BEIJING HUAXI PETROLEUM SERVICE PETROLEUM TECHNOLOGY Co. LTD (Beijing).

"Dryness improving device and method for improving dryness of steam of steam injection boiler" was invented by Bingping Xue (Dongying, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "Provided are dryness raiser and method for improving steam dryness of a steam injection boiler. Technical solutions of the dryness raiser and the method are that: a plurality of compressed air circulation holes perpendicular to a front end head are provided in the middle of a flange bolt hole of the front end head in a compressed air inlet passage, and the ...