- All sections
- C - Chemistry; metallurgy
- C09K - Materials for applications not otherwise provided for; applications of materials not otherwise provided for
- C09K 8/26 - Oil-in-water emulsions
Patent holdings for IPC class C09K 8/26
Total number of patents in this class: 138
10-year publication summary
|
11
|
9
|
16
|
9
|
14
|
11
|
6
|
9
|
8
|
0
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Halliburton Energy Services, Inc. | 20165 |
26 |
| Flotek Chemistry, LLC | 120 |
10 |
| Schlumberger Technology Corporation | 9690 |
7 |
| M-I L.L.C. | 893 |
6 |
| Kemira Oyj | 1167 |
5 |
| Schlumberger Canada Limited | 6913 |
4 |
| Schlumberger Technology B.v. | 4951 |
4 |
| Services Petroliers Schlumberger | 5426 |
4 |
| Chevron U.S.A. Inc. | 3774 |
3 |
| Aramco Services Company | 3504 |
3 |
| Saudi Arabian Oil Company | 11322 |
3 |
| Baker Hughes Oilfield Operations, LLC | 1885 |
3 |
| Schlumberger Holdings Limited | 2947 |
2 |
| Baker Hughes Incorporated | 5689 |
2 |
| Shell Internationale Research Maatschappij B.V. | 3792 |
2 |
| Shell Oil Company | 2196 |
2 |
| BP Exploration Operating Company Limited | 270 |
2 |
| The Lubrizol Corporation | 1335 |
2 |
| Prad Research and Development Limited | 2696 |
2 |
| Stepan Company | 567 |
2 |
| Other owners | 44 |