# Rocket Link Technology Co.

Startup profile on Capital Atlas: https://capitalatlas.ai/startups/rocket-link-technology-co

- Industry: Aerospace
- Headquarters: Sagamihara, Japan
- Website: www.rocketlink.co.jp
- Total disclosed funding: $4.1M
- Latest round: Series B (Jul 11, 2025)
- Investors on record: 5

## About

Rocket Link Technology Co., Ltd., based in Japan, specializes in the development of innovative rocket systems, particularly focusing on low-cost and user-friendly propellant technology aimed at advancing space exploration.Founded in 2023 in Sagamihara, Japan, Rocket Link Technology Co., Ltd. develops advanced rocket systems with a particular emphasis on low melting temperature Thermo-elastic Propellant (LTP). The company was formed to facilitate space exploration and initially focused on the Japanese market. The latest funding round, a Series B, raised JPY 600 million on July 11, 2025, from investors including Dimension, Incubate Fund, Mitsui Sumitomo Insurance Venture Capital, SPARX Group, and Sumisho Venture Partners. This funding represents the total amount raised by the company so far, indicating strong investor support for their innovative approaches in the aerospace sector.Rocket Link Technology Co., Ltd. focuses on developing innovative, low-cost, and user-friendly rocket systems, with a core product offering centered around their Low melting temperature Thermo-elastic Propellant (LTP). This groundbreaking propellant allows for reversible cooling during solidification, differentiating it from traditional solid propellants that require extensive manufacturing processes involving irreversible chemical reactions. By enabling quick shaping and the possibility of reusing residual propellant through reheating, LTP facilitates small-scale, continuous production and storage, making it accessible for various applications. The company aims to promote space exploration and technology utilization among diverse end users, including educational institutions and space-related organizations. Their products primarily target markets in Japan, with aspirations to expand to other regions with a growing interest in space technology and research.Rocket Link Technology's revenue generation model is structured around partnerships and B2B transactions with educational institutions, government agencies, and aerospace organizations requiring advanced space technology solutions. Revenue is generated through the sale of their LTP propellant and associated rocket technology services, which include training and educational programs. The company has successfully raised a total of JPY 600 million in funding, which reflects strong investor confidence and highlights potential for future revenue growth through expanded service offerings and market reach.In July 2025, Rocket Link Technology Inc. raised JPY 600 million in Series B funding to support the development of a suborbital rocket and advance reusable propellant technology. The investment will also support initiatives aimed at enhancing space education and establishing new partnerships. The company plans to expand its presence into international markets with a growing interest in space technology by 2026, as they seek to increase access to space for future missions.

## Funding rounds

- Series B, Jul 11, 2025, $4.1M — Mitsui Sumitomo Insurance Venture Capital, SPARX Group, Incubate Fund, DIMENSION, Sumisho Venture Partners

## Investors

- Mitsui Sumitomo Insurance Venture Capital (https://capitalatlas.ai/funds/mitsui-sumitomo-insurance-venture-capital) — Series B
- SPARX Group (https://capitalatlas.ai/funds/sparx-group) — Series B
- Incubate Fund (https://capitalatlas.ai/funds/incubate-fund) — Series B
- DIMENSION — Series B
- Sumisho Venture Partners (https://capitalatlas.ai/funds/sumisho-venture-partners) — Series B