VANCOUVER, BC and CALGARY, AB , May 15, 2024 /CNW/ - Northstar Clean Technologies Inc. (TSXV: ROOF) (OTCQB: ROOOF) ("Northstar" or the "Company") is pleased to announce that it has been issued a follow-on patent (the "Patent") by the United States Patent and Trademark Office ("USPTO") for the Company's proprietary technology for reprocessing asphalt shingles. The Patent is the first of three follow-on patents (in addition to... Read More