ALEXANDRIA, Va., July 16 -- United States Patent no. 12,359,142, issued on July 15, was assigned to WUHAN RESEARCH INSTITUTE OF MATERIALS PROTECTION (Wuhan, China).

"Preparation method of solid self-lubricating material with high temperature resistance" was invented by Haitao Duan (Wuhan, China), Changxin Wan (Wuhan, China), Shengpeng Zhan (Wuhan, China), Dan Jia (Wuhan, China), Jian Li (Wuhan, China), Wulin Zhang (Wuhan, China), Tian Yang (Wuhan, China) and Yinhua Li (Wuhan, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "This invention provides a preparation method of solid self-lubricating material with high temperature resistance, including steps described as follows: first, mixing polymer matrix re...