- All sections
- C - Chemistrymetallurgy
- C09K - Materials for applications not otherwise provided forapplications 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: 846
10-year publication summary
|
69
|
72
|
76
|
84
|
56
|
36
|
56
|
38
|
40
|
19
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Halliburton Energy Services, Inc. | 21320 |
154 |
| Saudi Arabian Oil Company | 14248 |
122 |
| Schlumberger Technology Corporation | 11820 |
53 |
| Dorf Ketal Chemicals FZE | 197 |
46 |
| Schlumberger Canada Limited | 7601 |
31 |
| Schlumberger Technology B.v. | 5295 |
28 |
| Services Petroliers Schlumberger | 6023 |
28 |
| Aramco Services Company | 4196 |
23 |
| Fluid Energy Group Ltd. | 58 |
20 |
| Baker Hughes Holdings LLC | 3021 |
19 |
| Nouryon Chemicals International B.V. | 645 |
15 |
| Schlumberger Holdings Limited | 2694 |
14 |
| Prad Research and Development Limited | 2658 |
14 |
| Chevron U.S.A. Inc. | 4136 |
13 |
| King Fahd University of Petroleum and Minerals | 1576 |
12 |
| ENERGY SOLUTIONS (US) LLC, a Delaware limited liability company | 186 |
11 |
| Akzo Nobel Chemicals International B.V. | 414 |
10 |
| Flotek Chemistry, LLC | 115 |
9 |
| Dorf Ketal Chemicals FZE | 35 |
9 |
| BASF SE | 21308 |
6 |
| Other owners | 209 |