ALEXANDRIA, Va., Oct. 21 -- United States Patent no. 12,768,477, issued on Oct. 20, was assigned to SUBARU Corp. (Tokyo).

"Multi-cylindrical structure supply pipe" was invented by Shota Sugiyama (Tokyo) and Pei Pei (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "A multi-cylindrical structure supply pipe includes at least three concentric pipes that couple a stationary fuel cell system that is stationary and an in-vehicle fuel cell system mounted on a fuel cell vehicle. The at least three concentric pipes include a hydrogen supply pipe, a liquid circulation pipe, and an electric wire pipe. The hydrogen supply pipe is configured to allow hydrogen gas to flow through the hydrogen supply pipe. The liquid c...