- All sections
- C - Chemistrymetallurgy
- C09K - Materials for applications not otherwise provided forapplications of materials not otherwise provided for
- C09K 8/72 - Eroding chemicals, e.g. acids
Patent holdings for IPC class C09K 8/72
Total number of patents in this class: 775
10-year publication summary
|
86
|
70
|
79
|
54
|
50
|
31
|
31
|
15
|
23
|
9
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Halliburton Energy Services, Inc. | 21299 |
156 |
| Saudi Arabian Oil Company | 14390 |
93 |
| Schlumberger Technology Corporation | 11961 |
32 |
| Schlumberger Canada Limited | 7616 |
28 |
| Schlumberger Technology B.v. | 5289 |
28 |
| Services Petroliers Schlumberger | 6024 |
28 |
| Aramco Services Company | 4191 |
27 |
| Schlumberger Holdings Limited | 2660 |
23 |
| Prad Research and Development Limited | 2642 |
23 |
| Baker Hughes Holdings LLC | 3011 |
17 |
| CURTIS, Philip, Anthony | 312 |
15 |
| Dorf Ketal Chemicals FZE | 35 |
12 |
| Fluid Energy Group Ltd. | 57 |
11 |
| Baker Hughes Incorporated | 4870 |
10 |
| Akzo Nobel Chemicals International B.V. | 411 |
10 |
| Nissan Chemical America Corporation | 64 |
10 |
| Dorf Ketal Chemicals FZE | 196 |
10 |
| Cleansorb Limited | 30 |
8 |
| ENERGY SOLUTIONS (US) LLC, a Delaware limited liability company | 184 |
8 |
| Flex-Chem Holding Company, LLC | 34 |
7 |
| Other owners | 219 |