- All sections
- C - Chemistrymetallurgy
- C09K - Materials for applications not otherwise provided forapplications of materials not otherwise provided for
- C09K 8/36 - Water-in-oil emulsions
Patent holdings for IPC class C09K 8/36
Total number of patents in this class: 640
10-year publication summary
|
50
|
67
|
79
|
73
|
59
|
34
|
24
|
23
|
12
|
6
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Halliburton Energy Services, Inc. | 20862 |
126 |
| Saudi Arabian Oil Company | 12997 |
95 |
| Schlumberger Technology Corporation | 10673 |
33 |
| M-I L.L.C. | 812 |
27 |
| Aramco Services Company | 3936 |
26 |
| Lamberti SpA | 254 |
21 |
| CURTIS, Philip, Anthony | 435 |
13 |
| Emery Oleochemicals GmbH | 112 |
12 |
| Ingevity South Carolina, LLC | 242 |
12 |
| Chevron U.S.A. Inc. | 3945 |
9 |
| ENERGY SOLUTIONS (US) LLC, a Delaware limited liability company | 181 |
9 |
| BYK-Chemie GmbH | 443 |
8 |
| Flotek Chemistry, LLC | 116 |
8 |
| M-I Drilling Fluids UK Limited | 89 |
8 |
| Ecolab USA Inc. | 5471 |
7 |
| King Fahd University of Petroleum and Minerals | 1170 |
7 |
| Schlumberger Oilfield UK Limited | 52 |
7 |
| Chevron Phillips Chemical Company LP | 1839 |
6 |
| Durham University | 37 |
6 |
| The Mosaic Company | 202 |
6 |
| Other owners | 194 |