Tennessee Patent of the Month – December 2025
A climate-tech breakthrough is transforming how we lock away atmospheric CO2 by turning agricultural waste into stable underground assets. Graphyte has secured U.S. Patent No. 12497565, titled ‘Verifiable and repairable preserved biolandfill for biological carbon sequestration and compositions for biological carbon preservation’, to pioneer this scalable solution. The invention, known as carbon casting, leverages the natural efficiency of photosynthesis to capture carbon at a fraction of the cost of traditional air capture methods.
Innovative Carbon Storage
The patented system converts biomass residues from timber and farming into dense, dry blocks. These blocks are encased in a specialized, impermeable barrier that prevents microbes from restarting the decomposition process. By keeping the organic material dry and oxygen-free, the technology ensures the carbon remains sequestered for over 1,000 years. This engineered approach prevents the release of greenhouse gases that typically occur when plant matter rots or burns.
Real-World Impact and Verification
Unlike previous storage methods, this biolandfill is designed to be both verifiable and repairable. The patent includes the use of sensors and tracers to monitor the integrity of the stored carbon in real-time. If a leak or breach is detected, the modular nature of the blocks allows for easy maintenance. This high level of transparency provides the reliability needed for the burgeoning carbon credit market. The process requires minimal energy, making it an immediately deployable tool in the global race to reach net-zero emissions.
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The Research & Experimentation Tax Credit (or R&D Tax Credit), is a general business tax credit under Internal Revenue Code section 41 for companies that incur research and development (R&D) costs in the United States. The credits are a tax incentive for performing qualified research in the United States, resulting in a credit to a tax return. For the first three years of R&D claims, 6% of the total qualified research expenses (QRE) form the gross credit. In the 4th year of claims and beyond, a base amount is calculated, and an adjusted expense line is multiplied times 14%. Click here to learn more.
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