- All sections
- C - Chemistrymetallurgy
- C09K - Materials for applications not otherwise provided forapplications of materials not otherwise provided for
- C09K 8/58 - Compositions for enhanced recovery methods for obtaining hydrocarbons, i.e. for improving the mobility of the oil, e.g. displacing fluids
Patent holdings for IPC class C09K 8/58
Total number of patents in this class: 1006
10-year publication summary
|
87
|
77
|
62
|
53
|
54
|
39
|
30
|
26
|
16
|
23
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Halliburton Energy Services, Inc. | 20946 |
71 |
| Saudi Arabian Oil Company | 13372 |
67 |
| Baker Hughes Incorporated | 5248 |
33 |
| Aramco Services Company | 4025 |
31 |
| Chevron U.S.A. Inc. | 3992 |
27 |
| Shell Internationale Research Maatschappij B.V. | 3553 |
26 |
| Schlumberger Canada Limited | 7366 |
24 |
| Shell Oil Company | 2138 |
23 |
| Services Petroliers Schlumberger | 5828 |
23 |
| Schlumberger Technology B.v. | 5183 |
22 |
| Schlumberger Holdings Limited | 2803 |
19 |
| BP Exploration Operating Company Limited | 268 |
19 |
| Prad Research and Development Limited | 2692 |
18 |
| Schlumberger Technology Corporation | 10881 |
17 |
| Board of Regents, The University of Texas System | 5860 |
16 |
| Linde Aktiengesellschaft | 1496 |
16 |
| Baker Hughes Holdings LLC | 3001 |
16 |
| Ecolab USA Inc. | 5519 |
13 |
| ExxonMobil Upstream Research Company | 2392 |
10 |
| M-I L.L.C. | 815 |
10 |
| Other owners | 505 |