GENEVA, Dec. 29 -- TDC INTERNATIONAL AG (Alpenstrasse 66004 LUZERN) filed a patent application (PCT/EP2025/064728) for "INSULATED PIPES FOR BURIED OR TRENCHLESS INSTALLATION" on May 27, 2025. With publication no. WO/2025/261738, the details related to the patent application was published on Dec 26, 2025.
Notably, the patent application was submitted under the International Patent Classification (IPC) system, which is managed by the World Intellectual Property Organization (WIPO).
Inventor(s): WELKER, Ruirui (c/o TDC International AGAlpenstrasse 66004 LUZERN), WELKER, Daniel (c/o TDC International AGAlpenstrasse 66004 LUZERN)
Abstract: The invention relates to a temperature insulated pipe section (10) with a central metal tube (12), a the...