- All sections
- C - Chemistrymetallurgy
- C09K - Materials for applications not otherwise provided forapplications of materials not otherwise provided for
- C09K 8/46 - Compositions for cementing, e.g. for cementing casings into boreholesCompositions for plugging, e.g. for killing wells containing inorganic binders, e.g. Portland cement
Patent holdings for IPC class C09K 8/46
Total number of patents in this class: 454
10-year publication summary
|
25
|
21
|
44
|
39
|
37
|
31
|
11
|
32
|
26
|
16
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Halliburton Energy Services, Inc. | 20977 |
147 |
| Saudi Arabian Oil Company | 13428 |
68 |
| Schlumberger Technology Corporation | 10914 |
32 |
| Schlumberger Canada Limited | 7373 |
24 |
| Schlumberger Technology B.v. | 5189 |
20 |
| Services Petroliers Schlumberger | 5835 |
20 |
| Dorf Ketal Chemicals FZE | 199 |
17 |
| CURTIS, Philip, Anthony | 405 |
10 |
| Aramco Services Company | 4039 |
5 |
| Baker Hughes Oilfield Operations, LLC | 2334 |
5 |
| Baker Hughes Holdings LLC | 2999 |
5 |
| COTTRILL, Emily Elizabeth Helen | 41 |
4 |
| Restone AS | 18 |
4 |
| Chevron U.S.A. Inc. | 4004 |
3 |
| Board of Regents, The University of Texas System | 5884 |
3 |
| China Petroleum & Chemical Corporation | 1913 |
3 |
| Elkem AS | 60 |
3 |
| Kerneos | 32 |
3 |
| Eavor Technologies Inc. | 88 |
3 |
| TURNER, Craig, Robert | 139 |
3 |
| Other owners | 72 |