Canada-based science and technology company Volt Carbon Technologies has received a notice of allowance from the US Patent and Trademark Office for a US patent application.

This represents the third patent allowance arising from the company’s original filing, establishing a growing patent portfolio that protects Volt Carbon’s proprietary dry separation technology and its application across graphite processing and advanced carbon materials.

The continued expansion of Volt Carbon’s US patent portfolio strengthens its position as it advances toward the commercial deployment of its dry separation platform, including the development of a scalable demonstration facility designed to validate the technology under commercial conditions.

The patent is expected to be issued following the completion of customary administrative procedures and payment of final fees.

“This third patent allowance strengthens our ability to scale a platform that preserves material value at the source and supports multiple downstream pathways, including high-value applications such as expandable graphite and graphene,” Volt Carbon Technologies CEO V-Bond Lee says.

Volt Carbon’s dry separation process preserves the crystalline structure of graphite at source, which is considered a critical distinction, given that conventional wet processing can damage the crystalline structure, thereby lowering yield and increasing downstream processing requirements.

By maintaining crystallinity, Volt Carbon’s process enables efficient conversion into battery materials, expandable graphite, and graphene, while supporting reduced processing intensity and environmental impact.

Moreover, the water- and chemical-free nature of this process also reduces materials handling and processing time within the facility, supporting improved throughput and operational efficiency.

With this milestone, Volt Carbon continues to establish a defensible foundation for its dry separation platform as it advances toward commercial deployment.

“Our objective is straightforward: demonstrate, commercialise, and move toward cash flow generation,” Lee says.

Notably, Lee is the first inventor of all of Volt Carbon’s air classifier patent filings and has more than 38 years of product development and engineering management experience, with multiple inventions having been implemented in commercial applications, including granted patents across the automotive and aerospace sectors.