Technology & R&D · IP & Certification
Four technology assets you can't buy separately
Patents take years to register, national R&D records require a track record, process know-how needs production experience, and facilities need capital. CARBON-U has built all four together.
Technology Moat
IP · R&D · PROCESS · ASSET
Intellectual property
- 4 registered — calcium carbonate from waste concrete fines, agglomerates, CBS dust and lime-based by-products
- 6 pending — CO₂ fixation & recycled gypsum, calcium hydroxide, production system & equipment, Class C fly ash, dolomite
- 2023 Excellent Patent Grand Prize
- 2024 National Quality Innovation Competition — Gold Prize (NPD)
3 national R&D projects
- Regulation-Free Special Zone demonstration (2021–2023, total program KRW 17.7 billion)
- R&D Special Zone — calcium carbonate/TiO₂ composite white pigment
- Purchase-conditional new product development — carbon-neutral PVC synthetic leather
Process know-how
- Calcium recovery from industrial by-products · CO₂ utilization technology
- Feedstock-specific pre-treatment · refining technology
- Energy-saving process design
Detailed process conditions are managed as trade secrets.
Production facility
- Design, build and operation of the Ulsan C-PCC plant
- 5 t/day C-PCC production verified with industrial by-products
- No CO₂ capture unit required
National R&D
National R&D track record
| Program | Project | Period |
|---|---|---|
| Regulation-Free Special Zone demonstration | High-grade calcium carbonate synthesis plant for high-value products (CO₂ Regulation-Free Special Zone · steel-slag extraction · total program KRW 17.7 billion) | 2021.01–2023.12 |
| R&D Special Zone program | Development and commercialization of a calcium carbonate–titanium dioxide composite white pigment from industrial by-products | 2022.10–2023.09 |
| Purchase-Conditional New Product Development program | Calcium carbonate made with CO₂ conversion technology and eco-friendly carbon-neutral PVC artificial leather fabric (automotive interior suppliers and others) | 2023.04–2025.03 |
Development history
Steel-slag extraction · 3-year build-out of a CO₂ utilization business base
C-PCC application development with automotive interior suppliers and others
2024 National Quality Innovation Competition — Gold Prize (NPD)
Upcycling cement-process by-products (CBS dust)
OCC · ultra-high-purity calcium carbonate · solid CaCl₂ (in progress)
Concept for linking process residue to mine-void filling and CO₂ storage (published article)
IP & Certification
Patents · awards · testing · certification
All 10 C-PCC-related patents (4 registered · 6 pending) belong to CARBONU Co., Ltd. The registered patents were fully transferred on Sep 16, 2025.
4 registered patents Patent owner: CARBONU Co., Ltd.
| Patent No. | Title of invention | Filed | Registered |
|---|---|---|---|
| No. 10-2444775 | Method for producing precipitated calcium carbonate from waste concrete fines | 2021.07.20 | 2022.09.14 |
| No. 10-2621557 | Method for producing agglomerated calcium carbonate | 2021.12.28 | 2024.01.02 |
| No. 10-2762214 | Method for producing calcium carbonate from CBS dust | 2024.04.26 | 2025.01.24 |
| No. 10-2779715 | Method for producing precipitated calcium carbonate from lime-based by-products | 2022.11.21 | 2025.03.06 |
6 pending applications Under examination
| Application No. | Title of invention | Filed |
|---|---|---|
| 10-2023-0041005 | Method for producing CO₂-fixed calcium carbonate and high-purity recycled gypsum | 2023.03.29 |
| 10-2024-0034875 | Method for producing calcium hydroxide used as an intermediate for treating CO₂ in flue gas | 2024.03.13 |
| 10-2024-0074002 | Calcium carbonate production system using CO₂ and CBS dust | 2024.06.05 |
| 10-2024-0074006 | Calcium carbonate production equipment using industrial by-products and CO₂ | 2024.06.05 |
| 10-2024-0125081 | Method for producing precipitated calcium carbonate from Class C fly ash | 2024.09.12 |
| 10-2024-0131457 | Method for producing precipitated calcium carbonate from dolomite powder | 2024.09.27 |
Source: Korean patent register (issued Sep 22, 2025) · patent list. IPC C01F 11/18 (calcium carbonate production) and others.
Awards
Certificate from the Minister of Trade, Industry and Energy · Presidential Award for Excellent Quality Circle, 50th National Quality Management Convention — awarded to EXCarbon (pre-spin-off entity)
Method for producing agglomerated calcium carbonate (No. 10-2621557)
- Done 3 KTR accredited tests (C-PCC samples)
- Planned Accredited test reports for oyster-shell products
- In progress Green Technology Certification · external GHG reduction methodology
- Planned GR certification · Eco-label · NEP
Joint R&D · technology partnership
Propose feedstock demonstrations, material application tests or joint government R&D.