ALEXANDRIA, Va., Oct. 28 -- United States Patent no. 12,455,209, issued on Oct. 28, was assigned to ZHEJIANG UNIVERSITY (Hangzhou, China).

"Gas permeation and leakage rate testing device and method for non-metallic hydrogen transmission pipe" was invented by Jianfeng Shi (Zhejiang, China), Zhanqi Fan (Zhejiang, China), Riwu Yao (Zhejiang, China), Jinyang Zheng (Zhejiang, China) and Yiming Ying (Zhejiang, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "A gas permeation and leakage rate testing device and method for a non-metallic hydrogen transmission pipe. The device includes: a testing member formed with a testing cavity adapted to placing a to-be-tested pipe, and the testing cavity being formed with a...