- All sections
- C - Chemistrymetallurgy
- C04B - Limemagnesiaslagcementscompositions thereof, e.g. mortars, concrete or like building materialsartificial stoneceramicsrefractoriestreatment of natural stone
- C04B 7/28 - Cements from oil shales, residues or waste other than slag from combustion residues
Patent holdings for IPC class C04B 7/28
Total number of patents in this class: 65
10-year publication summary
|
1
|
0
|
5
|
4
|
9
|
6
|
6
|
6
|
6
|
2
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Halliburton Energy Services, Inc. | 20911 |
5 |
| Roman Cement, LLC | 48 |
5 |
| Taiheiyo Cement Corporation | 238 |
3 |
| Fatec Oy | 9 |
3 |
| Hsustainability GmbH | 39 |
3 |
| Holcim Technology Ltd. | 998 |
2 |
| Tokuyama Corporation | 1395 |
2 |
| Ube Industries, Ltd. | 845 |
2 |
| Vicat | 98 |
2 |
| DB Group (Holdings) Ltd | 3 |
2 |
| Iris Ambiente S.r.l. Unipersonale | 3 |
2 |
| Hilti Aktiengesellschaft | 3498 |
1 |
| University of Florida Research Foundation, Inc. | 4035 |
1 |
| Cement Australia Pty Limited | 3 |
1 |
| Cementos Argos S.A. | 37 |
1 |
| Colorado State University Research Foundation | 706 |
1 |
| CR Minerals Company, LLC | 24 |
1 |
| Fundacion Tecnalia Research & Innovation | 217 |
1 |
| InterCement Brasil S.A. | 7 |
1 |
| King Faisal University | 918 |
1 |
| Other owners | 25 |