Produces beryllium for fusion energy with a proprietary low-temperature refining process (below 300 degrees).
| Date | Round | Amount |
|---|---|---|
| Feb 2026 | Series A MiRESSO closed its Series A at 4.23 billion yen, co-led by Spiral Capital and SBI Investment with 12 investors, for the BETA beryllium pilot plant. | $27.5M |
| Mar 2024 | Seed MiRESSO, which develops low-temperature beryllium refining for fusion, raised 250M JPY in seed funding led by Genesia Ventures with the JGC MIRAI Innovation Fund and Mitsui Sumitomo Insurance Capital. | $1.6M |
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