Marubun Corporation
VC Fund
Tokyo, Japan
Marubun Corporation is a VC fund in Tokyo focused on Electronics and Energy. Distribution of Cutting-edge Electronics Products
- Total investments:
- 4
- Last investment:
- Lead investor:
- 25%
Last updated:
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Industries Marubun Corporation invests in
Stages Marubun Corporation invests in
Countries Marubun Corporation invests in
Investment Focus
Industry
- Electronics 2 (50%)
- Energy 1 (25%)
- Hardware 1 (25%)
- Software 1 (25%)
- Wearables 1 (25%)
Stage
- Series A 1 (25%)
- Series D 1 (25%)
- Convertible Note 1 (25%)
- Venture - Series Unknown 1 (25%)
Country
- United States 2 (50%)
- Taiwan 1 (25%)
Investments
| Company | Description | Round | Links |
|---|---|---|---|
| EYs3D Microelectronics is a company in 3D image capture designs and solutions. 3D capturing IC, eYs3D’s chief product, is known for its quality, efficiency, and cost-effectiveness. The company also holds a position in the virtual reality market that provides a complete 3D imaging solution featuring low latency which is an aspect that is both rareand crucial to the success of a good virtual reality experience.EYs3D Microelectronics was founded in January 2016 and is based in Taipei, Taiwan. | $7M / Series A / May 25, 2021 | ||
| Nanoramic Laboratories develops energy storage technologies and materials, centering on its proprietary Neocarbonix electrode platform. The company provides an electrode solution that substitutes traditional PVDF binders and N-methylpyrrolidone solvent with a conductive 3D carbon binding structure, enabling lithium-ion batteries that offer greaterenergy density, faster charging, reduced manufacturing energy, and improved recyclability. The technology integrates seamlessly into existing manufacturing processes, supporting various battery applications, from electric vehicles to consumer electronics and stationary storage. Nanoramic also offers ultracapacitor and thermal interface products derived from its advanced carbon materials expertise, supporting enhanced power delivery and heat management in diverse uses. | $5M / Series D / Sep 13, 2018 | ||
| MC10, Inc. extends human capabilities through virtually invisible and conformal electronics. They reshape rigid, conventional electronics into thin, flexible devices that can stretch, bend and twist seamlessly with their bodies and the natural world. It combines breakthrough technology with innovative engineering to develop products that advancethe quality of life. The company's end-to-end system designed for In-Home and In-Clinic Study Execution. Its proprietary BioStamp system wearable health tech creates comfortable, discreet sensors that can be applied anywhere on the body for targeted data collection. With location-specific sensing capabilities, BioStamp sensors are able to retrieve real-world data about muscle activation and movement. | $10M / Venture - Series Unknown / Aug 20, 2018 | ||
| Nanoramic Laboratories develops energy storage technologies and materials, centering on its proprietary Neocarbonix electrode platform. The company provides an electrode solution that substitutes traditional PVDF binders and N-methylpyrrolidone solvent with a conductive 3D carbon binding structure, enabling lithium-ion batteries that offer greaterenergy density, faster charging, reduced manufacturing energy, and improved recyclability. The technology integrates seamlessly into existing manufacturing processes, supporting various battery applications, from electric vehicles to consumer electronics and stationary storage. Nanoramic also offers ultracapacitor and thermal interface products derived from its advanced carbon materials expertise, supporting enhanced power delivery and heat management in diverse uses. | $4M / Convertible Note / Apr 01, 2018 |
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FAQ
What does Marubun Corporation invest in?
Marubun Corporation invests primarily in Electronics, Energy and Hardware startups, most often at Series A and Series D stage. Most of the 4 investments tracked by Shizune back companies in United States. The Investment Focus section breaks down every industry, stage and country in the portfolio.
When did Marubun Corporation last invest?
The most recent investment recorded for Marubun Corporation closed in May 2021. Shizune tracks 4 investments in total for this profile, including round sizes, stages and portfolio companies, all sourced from confirmed public funding rounds and refreshed monthly.
Is Shizune's investor data accurate?
Yes — every stat on this profile is calculated from confirmed public funding rounds monitored across hundreds of sources since 2020. This profile was last refreshed in Sep 2026 and is updated monthly. Spotted something off? Use the “Suggest an edit” link near the top of the page.
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