- All sections
- C - Chemistry; metallurgy
- C09K - Materials for applications not otherwise provided for; applications 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: 1008
10-year publication summary
|
106
|
97
|
75
|
67
|
73
|
49
|
37
|
27
|
16
|
1
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Halliburton Energy Services, Inc. | 20419 |
73 |
| Saudi Arabian Oil Company | 12423 |
63 |
| Baker Hughes Incorporated | 5508 |
34 |
| Chevron U.S.A. Inc. | 3854 |
27 |
| Shell Internationale Research Maatschappij B.V. | 3721 |
26 |
| Schlumberger Canada Limited | 7147 |
25 |
| Aramco Services Company | 3744 |
24 |
| Services Petroliers Schlumberger | 5626 |
24 |
| Schlumberger Technology B.v. | 5068 |
23 |
| Shell Oil Company | 2153 |
23 |
| Schlumberger Holdings Limited | 2867 |
20 |
| BP Exploration Operating Company Limited | 266 |
19 |
| Schlumberger Technology Corporation | 10241 |
18 |
| Prad Research and Development Limited | 2696 |
18 |
| Board of Regents, The University of Texas System | 5613 |
16 |
| Linde Aktiengesellschaft | 1550 |
16 |
| Baker Hughes Holdings LLC | 3009 |
16 |
| Ecolab USA Inc. | 5338 |
13 |
| ExxonMobil Upstream Research Company | 2454 |
10 |
| M-I L.L.C. | 855 |
10 |
| Other owners | 510 |