Official Announcement — April 2, 2026
A landmark moment for coffee science, consumer protection, and the future of the low-acid coffee category.
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On April 2, 2026, the United States Patent and Trademark Office granted Puroast Coffee Company, Inc. an official System and Method Patent for its proprietary low-acid coffee roasting process — the first patent of its kind ever issued in the United States for the production of low-acid coffee.
This patent is the culmination of decades of scientific research, university-verified testing, and a roasting process built on a foundational energy technology breakthrough that has never been replicated by any other commercial coffee brand in the world.
The foundation of Puroast's patented process begins with a technological breakthrough: a biomass combustion furnace engineered by co-founder Kerry Sachs with a combustion efficiency exceeding 95%. At the time, 35% combustion efficiency was the industry benchmark. Kerry's 95%+ achievement was a fundamental engineering leap that attracted U.S. government feasibility studies into powering municipalities with biomass energy.
That same energy technology became the cornerstone of Puroast's roasting process — and the reason no competitor has been able to replicate it.
WHY BIOMASS EFFICIENCY IS THE KEY
Genuine slow-roasting requires sustained, precise, low-temperature heat at commercial scale — economically impossible with conventional roasters. Kerry Sachs's 95%+ efficient biomass furnace made it viable for the first time. Without it, genuine low-acid coffee at commercial scale does not exist.
Study 1 — UC Davis, 2008
Dr. Takayuki Shibamoto confirmed Puroast's slow-roasting process converts chlorogenic, caffeic, and quinic acids into phenolic antioxidant compounds. Dr. Shibamoto published four separate papers and presented to the American Chemical Society.
Study 2 — UC Davis, 2014
Follow-up research confirmed: 5X less acid per cup, 5X more antioxidants than leading coffees, and 7X more antioxidants than green tea.
Study 3 — NC A&T State University, 2024
Seven brands marketing themselves as low-acid were independently tested. Six of the seven failed. Only Puroast delivered verified low-acid results. Several competitors tested higher than regular commercial coffee.
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5X Less acid than leading brands |
5X More antioxidants than other coffees |
7X More antioxidants than green tea |
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The low-acid coffee label is currently completely unregulated in the United States. Any brand can print the claim on a bag without scientific verification or independent testing. The NC A&T 2024 study showed exactly what this produces: six of seven self-described low-acid brands unable to substantiate their claims.
Puroast's patent establishes the first legally recognized, scientifically verified benchmark for genuine low-acid coffee production in U.S. history — the foundation for a federal regulatory definition, mandatory disclosure standards, and consumer protection from unverified health claims.
“This patent is not just about protecting Puroast. It is about establishing truth in a category that has been exploited by unverified marketing claims for over a decade.”
— James Sachs, Co-Founder, Puroast Coffee Company
Q: What exactly does the USPTO patent cover?
The patent covers Puroast's complete integrated roasting system — the biomass combustion furnace, the specific thermal conditions that transform chlorogenic acids into antioxidants, and the roasting duration and temperature parameters that simultaneously lower acidity and increase antioxidant content while preserving full caffeine.
Q: Can other coffee brands license Puroast's patented process?
Yes. The patent opens a formal licensing pathway for producers who wish to produce genuine low-acid coffee under verified standards.
Q: Why is this important for all consumers, not just Puroast buyers?
Because it establishes the first legally recognized benchmark for what genuine low-acid coffee production requires — creating a foundation for federal regulatory standards that protect all consumers from misleading claims.
Q: Why hasn't any other company replicated Puroast's process?
Because Puroast's roasting method and the biomass energy system that powers it are inseparable. Conventional roasters are built for high-heat, fast throughput — making genuine slow-roasting economically unviable at commercial scale. The 95%+ efficient biomass furnace is the core technology.
Q: How does Puroast's pH compare to regular coffee?
Commercial coffee typically tests at pH 4.8–5.2. Puroast tests at verified pH 5.82 — well above the scientific threshold of 5.5. That difference represents approximately 5X less acidity on the logarithmic pH scale.
The Only Patented Low-Acid Coffee
The only coffee in the world backed by a U.S. patent, two university studies, and independent third-party verification.
SHOP PUROAST COFFEEThis article is for informational purposes only and does not constitute legal or medical advice.
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