ALEXANDRIA, Va., July 3 -- United States Patent no. D1,081,931, issued on July 1, was assigned to PPI PIPE Co. LTD. (Hwaseong-si, South Korea).
"Pipe fitting" was invented by Jong Ho Lee (Seongnam-si, South Korea), Hye Jung Lee (Seongnam-si, South Korea), Hye Sun Lee (Seongnam-si, South Korea) and Il Haeng Lee (Suwon-si, South Korea).
The patent was filed on May 10, 2023, under Application No. D/891,834.
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