Li Lihua
Chief Scientist · Patent Inventor
Inventor of the foundational bio-carbon extraction technology that enables memorial diamond synthesis from biological materials.
Chief Scientist · Patent Inventor
Inventor of the foundational bio-carbon extraction technology that enables memorial diamond synthesis from biological materials.
Li Lihua is the Chief Scientist at BioGem Lab and the original inventor of the proprietary carbon extraction technology that converts biological materials — human hair, pet fur, plant fibers — into high-purity carbon suitable for HPHT diamond synthesis. This technology is protected under Chinese National Invention Patent ZL 201010565778.9, filed in 2010 and granted in 2012.
The patented process addresses a fundamental materials science problem: biological carbon sources contain nitrogen, sulfur, trace metals, and organic contaminants that must be removed to achieve the >99.95% carbon purity required for gem-quality diamond growth. Li's multi-stage thermal and chemical purification pipeline achieves this purity threshold consistently, enabling memorial diamond production at industrial scale.
| Patent Number | ZL 2010 1 0565778.9 |
| Certificate No. | 1058820 |
| Title | 一种生物体钻石原料碳的提取工艺方法 |
| Filing Date | November 30, 2010 |
| Grant Date | October 10, 2012 |
| Status | Active — 14th year annuity paid |
The patent covers the complete carbon extraction pipeline: thermal carbonization of biological material, mixed-acid purification to remove contaminants, and the resulting high-purity carbon product suitable for graphitization and HPHT diamond synthesis. This intellectual property is the technical foundation of BioGem Lab's white-label memorial diamond manufacturing service.
Beyond the original 2010 patent, Li has led continuous process refinement at BioGem Lab's Luoyang facility. Key technical developments include:
Technical articles and educational content authored by Li Lihua for the BioGem Lab resource library:
Why cremated remains cannot be used for memorial diamonds — a chemical analysis.
Nitrogen, boron, and lattice defects in biological carbon diamonds.
Why >99.95% carbon purity is non-negotiable for gem-quality synthesis.
From hair sample to graphitized carbon — the complete purification pipeline.
For technical inquiries about carbon extraction, HPHT synthesis parameters, or partnership qualification, contact our laboratory directly.