Northstar Awarded Second Canadian Patent for Asphalt Shingle Reprocessing Technology

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CALGARY, AB, April 7, 2025 /PRNewswire/ - 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 Canadian Intellectual Patent Office ("CIPO") for the Company's proprietary asphalt shingle reprocessing technology. The Patent relates to Stage 3 of the reprocessing technology, the asphalt recovery stage, and is expected to remain in force until 2042.

Northstar Clean Technologies logo (CNW Group/Northstar Clean Technologies Inc.)
Northstar Clean Technologies logo (CNW Group/Northstar Clean Technologies Inc.)

"As a clear first mover in this emerging industry, securing further patents for Northstar's reprocessing technology is a critical step in securing, reinforcing and sustaining our technological advantage," commented Aidan Mills, Northstar President & CEO. "The latest patent protects a key part of our recovery process at the heart of our business, just as we prepare to commence commercial production in mid-2025 at our Calgary facility, a significant milestone for the Company. With this additional Canadian patent to protect the core technology of the Company, and additional patents progressing in the US and other international jurisdictions, we are well-positioned to sustain our leading position as the industry continues to develop."

Northstar received its initial Canadian patent in July 2024 which followed two patents issued in the United States in November 2022 and May 2024. The Company continues to pursue patent protection for its proprietary asphalt shingle reprocessing technology in North America and other international jurisdictions.

About Northstar

Northstar is a Canadian clean technology company focused on the sustainable recovery and reprocessing of asphalt shingles. Northstar developed and owns a proprietary design process for taking discarded asphalt shingles, otherwise destined for already over-crowded landfills, and extracts the liquid asphalt for use in new hot mix asphalt shingle manufacturing and asphalt flat roof systems while also extracting aggregate and fiber for use in construction products and other industrial applications. Focused on the circular economy, Northstar plans to reprocess used or defective asphalt shingle waste back into its three primary components for reuse/resale with its first commercial scale up facility in Calgary, Alberta. As an emerging innovator in sustainable processing, Northstar's mission aims at leading the recovery and reprocessing of asphalt shingles in North America that would otherwise be sent to landfill addressing numerous stakeholder objectives.