- All sections
- C - Chemistrymetallurgy
- C04B - Limemagnesiaslagcementscompositions thereof, e.g. mortars, concrete or like building materialsartificial stoneceramicsrefractoriestreatment of natural stone
- C04B 28/22 - Lime and pozzuolanas
Patent holdings for IPC class C04B 28/22
Total number of patents in this class: 42
10-year publication summary
|
4
|
2
|
0
|
0
|
2
|
0
|
1
|
0
|
0
|
0
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Halliburton Energy Services, Inc. | 20944 |
7 |
| Construction Research & Technology GmbH | 641 |
5 |
| United States Gypsum Company | 907 |
3 |
| Schlumberger Canada Limited | 7363 |
2 |
| Roman Cement, LLC | 48 |
2 |
| Schlumberger Technology B.v. | 5187 |
1 |
| Schlumberger Holdings Limited | 2808 |
1 |
| The Regents of the University of California | 20059 |
1 |
| Arizona Board of Regents, a Body Corporate of The State of Arizona Acting for and on Behalf of Arizona State University | 288 |
1 |
| Cellular Concrete, LLC | 2 |
1 |
| China University of Mining and Technology | 1265 |
1 |
| Hanson Aggregates LLC | 1 |
1 |
| Industry Foundation of Chonnam National University | 653 |
1 |
| Prad Research and Development Limited | 2692 |
1 |
| Promat Research and Technology Centre NV | 27 |
1 |
| Saint-Gobain Weber | 172 |
1 |
| Services Petroliers Schlumberger | 5827 |
1 |
| Vac-tron Equipment, LLC | 1 |
1 |
| Knauf Gips KG | 80 |
1 |
| BASF Wall Systems GmbH & Co. KG | 1 |
1 |
| Other owners | 8 |