Northwest Pipe Company Receives U.S. Patent for Innovative InfraShield® Joint System

The Company's revolutionary system enhances steel pressure pipe resilience in differential settlement and seismic applicationsVANCOUVER, Wash., Feb. 12, 2025 /PRNewswire/ -- Northwest Pipe Company (Nasdaq: NWPX), a leading manufacturer of water-related infrastructure, is proud to announce that the United States Patent and Trademark Office has issued U.S. Patent No. 12215817 for the InfraShield® Joint System ("InfraShield®"), an innovative Geohazard Resistant Steel Pipe (GRSP) solution designed to strengthen ...