Registered entities
CLEAN ENERGY SYSTEMS, INC.
Reg. No. 4085531United States
Innovation
23 patent families (14 granted) — focus: Mechanical engineering, Construction, Chemistry & metallurgy, Emerging technologies; filing pace slowing. Cited 993 times.
| Year | Filings |
|---|---|
| 2012 | 5 |
| 2013 | 6 |
| 2014 | 5 |
| 2015 | 1 |
| 2016 | 1 |
| 2017 | 1 |
| 2019 | 1 |
| 2022 | 1 |
| 2023 | 2 |
| 2024 | 1 |
Social engagement
Social engagement: 1.6K social following, 2 posts in the last 12 months — below the industry typical range.
Investor mix
4 investors on record; lead investors include Maersk Drilling, Carbon Direct Capital.
| Investor type | Count | Share |
|---|---|---|
| Venture capital | 1 | 25% |
| Other / undisclosed | 3 | 75% |
Recent activity
18 Feb 2026
Event
2026 International sCO2 Energy Technologies Symposium
15 Aug 2025
Partnership
ZEUS Demo Front-End Engineering and Design (FEED)