- All sections
- C - Chemistrymetallurgy
- C09K - Materials for applications not otherwise provided forapplications of materials not otherwise provided for
- C09K 8/473 - Density reducing additives, e.g. for obtaining foamed cement compositions
Patent holdings for IPC class C09K 8/473
Total number of patents in this class: 193
10-year publication summary
|
15
|
23
|
11
|
20
|
8
|
11
|
4
|
8
|
8
|
3
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Halliburton Energy Services, Inc. | 20908 |
62 |
| Saudi Arabian Oil Company | 13206 |
25 |
| Schlumberger Technology Corporation | 10745 |
15 |
| Schlumberger Canada Limited | 7298 |
9 |
| Schlumberger Technology B.v. | 5163 |
9 |
| Services Petroliers Schlumberger | 5788 |
9 |
| Aramco Services Company | 3981 |
7 |
| CURTIS, Philip, Anthony | 424 |
7 |
| Sun Drilling Products Corporation | 63 |
6 |
| Schlumberger Holdings Limited | 2819 |
4 |
| Prad Research and Development Limited | 2693 |
4 |
| Technicore Underground Inc. | 8 |
3 |
| Hilti Aktiengesellschaft | 3496 |
2 |
| Holcim Technology Ltd. | 989 |
2 |
| Baker Hughes, a GE Company, LLC | 2112 |
2 |
| COTTRILL, Emily Elizabeth Helen | 41 |
2 |
| TURNER, Craig, Robert | 140 |
2 |
| Baker Hughes Holdings LLC | 3005 |
2 |
| Oxy Low Carbon Ventures, LLC | 26 |
2 |
| China Oilfield Services Limited | 87 |
1 |
| Other owners | 18 |