- All sections
- C - Chemistry; metallurgy
- C09K - Materials for applications not otherwise provided for; applications of materials not otherwise provided for
- C09K 8/74 - Eroding chemicals, e.g. acids combined with additives added for specific purposes
Patent holdings for IPC class C09K 8/74
Total number of patents in this class: 840
10-year publication summary
|
78
|
69
|
72
|
76
|
84
|
56
|
36
|
55
|
38
|
3
|
| 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 |
156 |
| Saudi Arabian Oil Company | 12423 |
115 |
| Dorf Ketal Chemicals FZE | 240 |
58 |
| Schlumberger Technology Corporation | 10241 |
46 |
| Schlumberger Canada Limited | 7147 |
33 |
| Schlumberger Technology B.v. | 5068 |
30 |
| Services Petroliers Schlumberger | 5626 |
30 |
| Aramco Services Company | 3744 |
22 |
| Baker Hughes Holdings LLC | 3009 |
19 |
| Schlumberger Holdings Limited | 2867 |
18 |
| Fluid Energy Group Ltd. | 68 |
18 |
| Nouryon Chemicals International B.V. | 598 |
17 |
| Prad Research and Development Limited | 2696 |
14 |
| King Fahd University of Petroleum and Minerals | 1007 |
12 |
| Chevron U.S.A. Inc. | 3854 |
11 |
| Akzo Nobel Chemicals International B.V. | 480 |
11 |
| Flotek Chemistry, LLC | 118 |
9 |
| ENERGY SOLUTIONS (US) LLC, a Delaware limited liability company | 221 |
9 |
| CURTIS, Philip, Anthony | 496 |
7 |
| BASF SE | 20403 |
6 |
| Other owners | 199 |