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Aeterlink
Long-range wireless power (AirPlug) for factories, buildings, and implants
About Aeterlink
Aeterlink Inc. (エイターリンク株式会社) is a Tokyo-based deeptech company commercializing long-range microwave wireless power transfer under the AirPlug™ brand—rooted in Stanford medical-implant research by co-founders Yuji Tanabe and Ryo Iwasa, incorporated August 2020. AirPlug powers IoE sensors without wiring or batteries across factory automation, building management, and longer-term medical-implant use cases. The firm has raised successive Series A/B/extension rounds and venture debt (cumulative ~¥68B including grants/debt per Feb 2025 PR) from investors including KII, Itochu Technology Ventures, JAFCO, Mizuho Capital, SMBC VC, MUFJ Capital, SPARX, and others. Selected for Tokyo SusHi Tech Global Growth Acceleration Program Phase 1 (2026).
Source: Dealroom company dataKnowledge graph
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Funding history
Company financing events and reported valuations.
| Deal type | Date | Amount | Valuation | Investors | Source |
|---|---|---|---|---|---|
| SERIES BOther financing | Oct 2025 | $31M | $125M | Undisclosed | — |
| SERIES BOther financing | Feb 2025 | $14M | $79M | Energy and Environment Investment · Mirai Sozo Capital · JAFCO · Boost Capital | ↗ |
Growth signals
Latest recorded traffic for Aeterlink is 5.9K monthly website visits, up 7.3% over the last three months. Aeterlink's team grew 19.2% over the past year.
Open positions
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Investments and acquisitions
Recent portfolio relationships for companies that also act as investors or acquirers.
Investors
From Dealroom's funding and investor records, grouped by the round each investor first entered.
Series A11 investors entered at this stage
Keio Innovation Initiative
Itochu Technology Ventures
Mitsubishi UFJ Capital
SMBC Venture Capital
Mizuho Capital
JAFCO
SPARX Asset Management
Energy and Environment Investment- MCMirai Sozo Capital
Boost Capital
Resona Capital
Series B and later2 investors entered at this stage
Shizuoka Bank
Aozora Corporate Investment
Other known investors1 additional known investor
Stanford University
Source: Dealroom Talent Intelligence.
Global footprint
team presence
Market sentiment
An AI-synthesised read of the highest-engagement posts about Aeterlink on X, ranked by likes and reposts, corporate channels excluded.
Reading the room on X — pulling top posts and synthesizing themes…
Source: X recent search ranked by engagement (likes + retweets) · Synthesis by Claude · Cached for 1 hour
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