Registered entities
Tsubame Bhb Co., Ltd.
Reg. No. TsubameBHBCo.,Ltd.Japan
Innovation
7 patent families (3 granted) — focus: Operations & transport, Chemistry & metallurgy, Emerging technologies; filing pace steady. Cited 392 times.
| Year | Filings |
|---|---|
| 2018 | 1 |
| 2019 | 3 |
| 2020 | 4 |
| 2021 | 4 |
| 2022 | 3 |
| 2023 | 1 |
| 2024 | 1 |
| 2025 | 5 |
| 2026 | 1 |
Social engagement
Social engagement: 854 social following, 10 posts in the last 12 months — below the industry typical range.
Investor mix
15 investors on record; lead investors include Yokogawa, Energy & Environment Investment.
| Investor type | Count | Share |
|---|---|---|
| Venture capital | 5 | 33% |
| Bank & private debt | 1 | 7% |
| Other / undisclosed | 9 | 60% |
Recent activity
24 Jun 2026
Event
WIPO GREEN Technology Forum 2026: Featuring Japan's Innovations for a Sustainable Future
5 Jun 2026
Product launch
Tsubame BHB
28 Apr 2026
Event
SusHi Tech Tokyo 2026