- 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: 655
10-year publication summary
|
67
|
79
|
73
|
59
|
34
|
24
|
23
|
14
|
15
|
8
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Halliburton Energy Services, Inc. | 21305 |
125 |
| Saudi Arabian Oil Company | 14275 |
99 |
| Schlumberger Technology Corporation | 11839 |
39 |
| Aramco Services Company | 4194 |
27 |
| M-I L.L.C. | 741 |
24 |
| Lamberti SpA | 258 |
20 |
| Emery Oleochemicals GmbH | 110 |
12 |
| CURTIS, Philip, Anthony | 327 |
12 |
| Mainstream Pine Products, LLC | 59 |
10 |
| Chevron U.S.A. Inc. | 4145 |
9 |
| ENERGY SOLUTIONS (US) LLC, a Delaware limited liability company | 186 |
9 |
| BYK-Chemie GmbH | 446 |
8 |
| Flotek Chemistry, LLC | 115 |
8 |
| King Fahd University of Petroleum and Minerals | 1581 |
8 |
| M-I Drilling Fluids UK Limited | 89 |
8 |
| Schlumberger Canada Limited | 7609 |
7 |
| Schlumberger Technology B.v. | 5295 |
7 |
| Ecolab USA Inc. | 5807 |
7 |
| Services Petroliers Schlumberger | 6028 |
7 |
| Schlumberger Oilfield UK Limited | 51 |
7 |
| Other owners | 202 |