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HPQ Files Patent Application for New Continuous SiOx Manufacturing Process Based on Its PUREVAP™ QRR Technology

Posted by Alavaro Coronel at 8:32 AM on Friday, November 17th, 2023

Revolutionizing Silicon Anode Materials and Redefining Battery Industry Dynamics


In a significant stride towards transforming the silicon-based anode material landscape, HPQ Silicon Inc. has filed a groundbreaking patent application that could reshape the production processes of Silicon Oxide (SiOx). As per French law, HPQ acquired all rights held by the inventors for C$90,000.00. The patent protects a unique QRR technology configuration that allows the production of SiOx on the same equipment.

This move underscores HPQ’s commitment to sustainable technology and positions the company as a key player in the ever-evolving green engineering sector.

Background and Context:

Founded as a technology company specializing in green engineering processes for silica and silicon material production, HPQ Silicon has consistently demonstrated its prowess in innovation. The recent patent filing, centered around continuous SiOx manufacturing, builds on the success of the company’s proprietary PUREVAP™ QRR technology, designed to convert quartz into low-carbon 3N+ Si in a single step.

Key Highlights and Advantages:

The newly patented process introduces a game-changing element: continuous SiOx production. Contrary to the conventional batch production, this innovation allows for seamless, uninterrupted manufacturing of SiOx. What sets this apart is its adaptability to the existing QRR technology, minimizing developmental risks. Furthermore, considering that SiOx is priced 2 to 3 times higher than silicon of equivalent purity, this breakthrough holds immense economic potential.

Potential Impact and Significance:

The implications of this patent extend far beyond the confines of HPQ Silicon. With silicon suboxides (SiOx) gaining traction as a high-capacity lithium battery anode material, the market is poised for substantial growth. HPQ’s unique approach not only aligns with the industry trends but also positions the company at the forefront of meeting the estimated 300,000-ton demand for silicon anode materials by 2030.

Expert Opinions and Analysis:

Bernard Tourillon, President and CEO of HPQ Silicon, emphasizes the enhanced value proposition for silicon-based anode materials. The modified PUREVAP™ QRR leverages the capability to produce SiOx, a material highly sought after by the battery industry. This strategic move aligns with the growing importance of SiOx in the multi-billion-dollar battery material market.

Challenges and Considerations:

While the patent signifies a monumental leap forward, it’s essential to acknowledge potential challenges. The company’s commitment to mitigating risks and leveraging its technology to meet market demands underscores a proactive approach to navigate potential hurdles.


As HPQ Silicon files this groundbreaking patent, the company sets a new benchmark in continuous SiOx manufacturing. Beyond technological innovation, this move places HPQ at the nexus of economic viability and environmental responsibility. With visionary leadership, strategic initiatives, and a commitment to sustainable practices, HPQ Silicon is poised to play a pivotal role in shaping the future of silicon anode materials and, consequently, the global battery industry.


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