ALEXANDRIA, Va., Sept. 8 -- United States Patent no. 12,728,658, issued on Sept. 8.
"Marking device for printing logo patterns on a surface of a plastic tubing and method for marking the plastic tubing" was invented by Chien-Jieh Sun (Taipei City, Taiwan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A marking device comprises a transfer printing unit, a peeling unit, and a cooling unit. The transfer printing unit is disposed on an output side of a plastic extrusion machine. The transfer printing unit includes a transfer printing tape having a surface with logo patterns. A pressing rod presses the transfer printing tape against a surface of a plastic tubing. The logo patterns are transferred to the plastic t...