- 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: 185
10-year publication summary
|
23
|
11
|
20
|
8
|
11
|
4
|
8
|
8
|
6
|
1
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Halliburton Energy Services, Inc. | 21242 |
56 |
| Saudi Arabian Oil Company | 13949 |
25 |
| Schlumberger Technology Corporation | 11549 |
16 |
| Schlumberger Canada Limited | 7571 |
9 |
| Schlumberger Technology B.v. | 5270 |
9 |
| Services Petroliers Schlumberger | 5981 |
9 |
| Aramco Services Company | 4162 |
7 |
| CURTIS, Philip, Anthony | 348 |
5 |
| Schlumberger Holdings Limited | 2730 |
4 |
| Prad Research and Development Limited | 2679 |
4 |
| Sun Drilling Products Corporation | 48 |
3 |
| Technicore Underground Inc. | 8 |
3 |
| Hilti Aktiengesellschaft | 3616 |
2 |
| Baker Hughes, a GE Company, LLC | 2092 |
2 |
| COTTRILL, Emily Elizabeth Helen | 41 |
2 |
| TURNER, Craig, Robert | 138 |
2 |
| Baker Hughes Holdings LLC | 2994 |
2 |
| Oxy Low Carbon Ventures, LLC | 24 |
2 |
| Amrize Technology Switzerland LLC | 716 |
2 |
| China Oilfield Services Limited | 93 |
1 |
| Other owners | 20 |