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Aeterlink

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Long-range wireless power (AirPlug) for factories, buildings, and implants

Tokyo, JapanFounded 2020Robotics
Valuation $100–250M Last recorded · 2025
Headcount <100 Current team size
Total funding $50–100M Disclosed equity funding
Unlock exact values This page shows ranges. Dealroom has the exact numbers for Aeterlink and the history behind them.

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 data

At a glance

Status
Operational
Founded
2020
Headquarters
Tokyo, Japan
Employees
62
Open positions
5
Dealroom signal
88.3/100
Industry
Energy, Robotics
Sector
Robotics, Spinout, DT and LS, science-based
Technology
Deep Tech
Business model
Manufacturing
Client focus
b2b

Funding history

6 recorded events

Company financing events and reported valuations.

Deal typeDateAmountValuationInvestorsSource
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 ↗
Showing the latest 2 of 6 recorded eventsBook a demo for the full funding history →

Growth signals

Aeterlink website traffic

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.

Latest monthly visits5.9K 3-month web change+7.3% 1-year team growth+19.2%
Summary metrics are public; monthly history is available with a demoCompare with peers →

Investments and acquisitions

Capital deployed

Recent portfolio relationships for companies that also act as investors or acquirers.

Investors

14 investors on the cap table

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
  • Mirai 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
Team profiled 2 named & role-tagged
Founders Hidden — book a demo/100 quality score
Key operators 1 quality Hidden — book a demo/100
Potential founders Hidden — book a demo likely future founders
Startup mafia Hidden — book a demo alumni-founded startups
Talent movements Hidden — book a demo in · Hidden — book a demo out past 12 months

Source: Dealroom Talent Intelligence.

Global footprint

Workforce and web traffic by country
Workforce by country
2 countries with
team presence
🇯🇵 Japan90.3%
🇺🇸 United States9.7%
2 countries shown

Market sentiment

Posts on X, past 7 days

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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