Northstar Clean adds limestone as fourth product line

Executive Summary

• Northstar Clean Technologies Inc. has successfully separated and recovered limestone from asphalt shingles, establishing a new fourth product line for the company.
• The U.S. Patent and Trademark Office (USPTO) has issued a new patent to Northstar for the limestone recovery portion of its proprietary asphalt shingle reprocessing technology.
• The patent is expected to remain in force until 2045, strengthening the company's intellectual property portfolio and first-mover advantage in the global marketplace.

Key Details

• New Product Line: Limestone recovered from asphalt shingles, joining existing lines of liquid/pelletized asphalt, aggregate, and fibre/fibreglass.
• Patent Details:
  • Issued by the U.S. Patent and Trademark Office (USPTO).
  • Covers the limestone recovery portion of the proprietary asphalt shingle reprocessing technology.
  • Patent expiration: 2045.
• Strategic Impact:
  • Adds a fourth revenue stream/product line.
  • Delivers a final asphalt product with high-quality characteristics by removing limestone during processing.
  • Strengthens intellectual property protection and first-mover advantage.
• Patent History:
  • Initial U.S. patent received in November 2022.
  • Patents already obtained in the United States and Canada.
  • Company continues to pursue further patent protection in the United States, Canada, and other international jurisdictions.

Notable Quotes

• "By extracting limestone directly from asphalt shingles, we've been able to establish both a fourth product line for the company and, most importantly, to deliver a final asphalt product with high-quality characteristics," commented Aidan Mills, president and chief executive officer of Northstar. "Additionally, this patent adds further protection to Northstar's intellectual property portfolio while strengthening our first-mover advantage. We believe the high quality of our asphalt will continue to provide significant differentiation for Northstar in the global marketplace."