- All sections
- C - Chemistrymetallurgy
- C09K - Materials for applications not otherwise provided forapplications of materials not otherwise provided for
- C09K 8/42 - Compositions for cementing, e.g. for cementing casings into boreholesCompositions for plugging, e.g. for killing wells
Patent holdings for IPC class C09K 8/42
Total number of patents in this class: 1397
10-year publication summary
|
135
|
123
|
118
|
98
|
76
|
53
|
55
|
60
|
55
|
28
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Halliburton Energy Services, Inc. | 21320 |
334 |
| Saudi Arabian Oil Company | 14248 |
161 |
| Schlumberger Technology Corporation | 11820 |
95 |
| Schlumberger Canada Limited | 7601 |
72 |
| Services Petroliers Schlumberger | 6023 |
61 |
| Schlumberger Technology B.v. | 5295 |
60 |
| Schlumberger Holdings Limited | 2694 |
31 |
| Prad Research and Development Limited | 2658 |
31 |
| Aramco Services Company | 4196 |
27 |
| CURTIS, Philip, Anthony | 329 |
21 |
| Southwest Petroleum University | 521 |
17 |
| Dorf Ketal Chemicals FZE | 197 |
17 |
| Flotek Chemistry, LLC | 115 |
15 |
| China National Petroleum Corporation | 637 |
11 |
| China University of Petroleum (East China) | 418 |
11 |
| Baker Hughes, a GE Company, LLC | 2054 |
11 |
| ConocoPhillips Company | 1709 |
10 |
| Thru Tubing Solutions, Inc. | 404 |
10 |
| Baker Hughes Holdings LLC | 3021 |
10 |
| Baker Hughes Incorporated | 4927 |
9 |
| Other owners | 383 |