ALEXANDRIA, Va., Oct. 6 -- United States Patent no. 12,753,556, issued on Oct. 6, was assigned to ORIENTAL SHIRAISHI Corp. (Tokyo).
"Press-in reinforcement steel plate underwater swell prevention structure and steel plate press-in method" was invented by Masaya Miyazaki (Tokyo), Keisuke Iwasawa (Tokyo) and Mitsuru Harada (Tokyo).
According to the abstract* released by the U.S. Patent & Trademark Office: "A press-in reinforcement steel plate underwater swell prevention structure that prevents, in filling with a filler, swell of a press-in reinforcement steel plate pressed-in for reinforcement around an existing columnar structure part of which is built in water, includes: a pair of swell prevention members having a Z-shaped cross section a...