- 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: 1015
10-year publication summary
|
97
|
75
|
67
|
73
|
48
|
37
|
29
|
18
|
37
|
7
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Saudi Arabian Oil Company | 13953 |
74 |
| Halliburton Energy Services, Inc. | 21217 |
72 |
| Baker Hughes Incorporated | 5041 |
33 |
| Aramco Services Company | 4162 |
32 |
| Chevron U.S.A. Inc. | 4092 |
28 |
| Shell Internationale Research Maatschappij B.V. | 3456 |
26 |
| Schlumberger Canada Limited | 7558 |
24 |
| Shell Oil Company | 2091 |
23 |
| Services Petroliers Schlumberger | 5977 |
23 |
| Schlumberger Technology B.v. | 5267 |
22 |
| Schlumberger Holdings Limited | 2735 |
19 |
| BP Exploration Operating Company Limited | 261 |
19 |
| Prad Research and Development Limited | 2679 |
18 |
| Schlumberger Technology Corporation | 11485 |
17 |
| Board of Regents, The University of Texas System | 6045 |
16 |
| Linde Aktiengesellschaft | 1435 |
16 |
| Baker Hughes Holdings LLC | 2992 |
16 |
| Ecolab USA Inc. | 5732 |
13 |
| ExxonMobil Upstream Research Company | 2335 |
10 |
| M-I L.L.C. | 772 |
10 |
| Other owners | 504 |