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Zentek Granted U.S. Patent for ZenGUARD(TM) Graphene-Based Technology
U.S. Patent No. 12,616,206 granted to Zentek with 327-day term extension; complements issued Canadian patent covering ZenGUARD(TM) in HVAC and PPE applications.Guelph, Ontario--(Newsfile Corp. - June 9, 2026) - Zentek Ltd. (TSXV: ZEN) (NASDAQ: ZTEK) ("Zentek" or the "Company") is pleased to announce that the United States Patent and Trademark Office has issued U.S. Patent No. 12,616,206 (the "Patent") covering the foundational graphene-based technology underlying the Company's ZenGUARD™...
About this update from Zentek Ltd.
U.S. Patent No. 12,616,206 granted to Zentek with 327-day term extension; complements issued Canadian patent covering ZenGUARD(TM) in HVAC and PPE applications. Guelph, Ontario--(Newsfile Corp. - June 9, 2026) - Zentek Ltd. (TSXV: ZEN) (NASDAQ: ZTEK) ("Zentek" or the "Company") is pleased to announce that the United States Patent and Trademark Office has issued U.S. Patent No. 12,616,206 (the "Patent") covering the foundational graphene-based technology underlying the Company's ZenGUARD™ platform. The Patent includes a 327-day extension to its enforceable term to compensate for examination delays. The Patent is owned by Zentek Ltd., with Dr. Seyyedarash Haddadi named as lead inventor alongside co-inventors. The Patent further strengthens the Company's intellectual property protection for ZenGUARD™, complementing its issued Canadian patent covering personal protective equipment and heating, ventilation and air conditioning ("HVAC") applications, including ZenGUARD™ Enhanced Air Filters, which the Company announced on May 6, 2026, are now available for sale in Canada. U.S. Air Filtration Market The U.S. is among the largest markets globally for HVAC air filtration and is several times the size of the Canadian market. The U.S. air filter market was estimated at approximately US$5.3 billion in 2025¹. HVAC operations are a significant component of commercial building energy use, and industry estimates indicate approximately 30% of HVAC energy consumption is attributable to overcoming the resistance imposed by air filters². ZenGUARD™ Enhanced Air Filters are a graphene-based technology engineered to help address this problem by delivering enhanced air quality without imposing an energy penalty. The Company will continue evaluating U.S. regulatory requirements, including EPA registration, while working alongside its U.S. manufacturing and distribution partner, Quality Filters Inc., an established American air filter manufacturer headquartered in Robertsdale, Alabama, to potentially enter the U.S. market. Any such U.S. market entry remains subject to applicable regulatory requirements, commercial readiness, manufacturing and distribution considerations, market acceptance and other risks, and there can be no assurance that Zentek will enter the U.S. market, or as to the timing, scope or commercial success of any...