- All sections
- C - Chemistrymetallurgy
- C09K - Materials for applications not otherwise provided forapplications of materials not otherwise provided for
- C09K 8/467 - Compositions for cementing, e.g. for cementing casings into boreholesCompositions for plugging, e.g. for killing wells containing inorganic binders, e.g. Portland cement containing additives for specific purposes
Patent holdings for IPC class C09K 8/467
Total number of patents in this class: 1295
10-year publication summary
|
96
|
110
|
94
|
77
|
60
|
47
|
55
|
74
|
54
|
51
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Halliburton Energy Services, Inc. | 21338 |
381 |
| Saudi Arabian Oil Company | 14235 |
176 |
| Schlumberger Technology Corporation | 11818 |
87 |
| Schlumberger Canada Limited | 7606 |
74 |
| Services Petroliers Schlumberger | 6024 |
61 |
| Schlumberger Technology B.v. | 5298 |
60 |
| Aramco Services Company | 4195 |
44 |
| Schlumberger Holdings Limited | 2699 |
25 |
| Prad Research and Development Limited | 2661 |
20 |
| CURTIS, Philip, Anthony | 331 |
20 |
| TURNER, Craig, Robert | 137 |
20 |
| BASF SE | 21303 |
11 |
| Baker Hughes Oilfield Operations, LLC | 2527 |
11 |
| Baker Hughes Holdings LLC | 3023 |
10 |
| China National Petroleum Corporation | 636 |
9 |
| China Petroleum & Chemical Corporation | 2152 |
8 |
| Southwest Petroleum University | 521 |
8 |
| Baker Hughes Incorporated | 4934 |
7 |
| China University of Petroleum (East China) | 417 |
7 |
| CNPC Engineering Technology R&D Company Limited | 126 |
7 |
| Other owners | 249 |