ALEXANDRIA, Va., Feb. 3 -- United States Patent no. 12,539,654, issued on Feb. 3, was assigned to SEMES Co. LTD. (Chungcheongnam-Do, South Korea).
"Apparatus and method for manufacturing pipe" was invented by Chul Jin Park (Chungcheongnam-do, South Korea).
According to the abstract* released by the U.S. Patent & Trademark Office: "An apparatus for manufacturing a pipe includes a mold portion having an inner surface corresponding to an outer shape of the pipe, and a core portion having an outer surface corresponding to an inner shape of the pipe, wherein the mold portion includes an upper mold, a plurality of side molds, and a lower mold, and the core portion includes a plurality of corner cores corresponding to an inner corner of the pipe...