ALEXANDRIA, Va., Aug. 25 -- United States Patent no. 12,716,528, issued on Aug. 25.
"Preparation method and use of hybrid composite pipes" was invented by Xiaodong Zhang (Hangzhou, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "A preparation method of a hybrid composite pipe and applications thereof. By mixing and curing high polymers as a matrix with one or more types of porous lightweight aggregates or granules, the main body or structural layer of this composite pipe can combine with a variety of non-metal or metal materials as well as various types of metal or non-metal base pipes so as to prepare different hybrid composite pipes. The high polymers include the thermosetting high polymers and thermo...