- All sections
- C - Chemistry; metallurgy
- C09K - Materials for applications not otherwise provided for; applications 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: 189
10-year publication summary
|
11
|
15
|
23
|
11
|
20
|
8
|
11
|
4
|
8
|
3
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Halliburton Energy Services, Inc. | 20165 |
67 |
| Saudi Arabian Oil Company | 11322 |
23 |
| Schlumberger Technology Corporation | 9690 |
11 |
| CURTIS, Philip, Anthony | 497 |
9 |
| Schlumberger Canada Limited | 6913 |
8 |
| Schlumberger Technology B.v. | 4951 |
8 |
| Services Petroliers Schlumberger | 5426 |
8 |
| Aramco Services Company | 3504 |
6 |
| Sun Drilling Products Corporation | 66 |
6 |
| Schlumberger Holdings Limited | 2947 |
4 |
| Prad Research and Development Limited | 2696 |
4 |
| Hilti Aktiengesellschaft | 3227 |
2 |
| Holcim Technology Ltd. | 868 |
2 |
| Baker Hughes, a GE Company, LLC | 2171 |
2 |
| COTTRILL, Emily Elizabeth Helen | 41 |
2 |
| TURNER, Craig, Robert | 152 |
2 |
| Baker Hughes Holdings LLC | 3060 |
2 |
| Oxy Low Carbon Ventures, LLC | 21 |
2 |
| AltaRock Energy, Inc. | 32 |
1 |
| BYK-Chemie GmbH | 437 |
1 |
| Other owners | 19 |