- All sections
- C - Chemistrymetallurgy
- C09K - Materials for applications not otherwise provided forapplications of materials not otherwise provided for
- C09K 8/03 - Specific additives for general use in well-drilling compositions
Patent holdings for IPC class C09K 8/03
Total number of patents in this class: 1227
10-year publication summary
|
131
|
121
|
120
|
90
|
82
|
45
|
48
|
38
|
45
|
16
|
| 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 |
264 |
| Saudi Arabian Oil Company | 14248 |
195 |
| Aramco Services Company | 4196 |
50 |
| Schlumberger Technology Corporation | 11820 |
40 |
| M-I L.L.C. | 743 |
35 |
| Schlumberger Technology B.v. | 5295 |
28 |
| Baker Hughes Incorporated | 4927 |
28 |
| Schlumberger Canada Limited | 7601 |
27 |
| Services Petroliers Schlumberger | 6023 |
27 |
| Championx LLC | 641 |
23 |
| Dorf Ketal Chemicals FZE | 197 |
17 |
| Tetra Technologies, Inc. | 107 |
15 |
| Schlumberger Holdings Limited | 2694 |
13 |
| Nissan Chemical America Corporation | 64 |
13 |
| King Fahd University of Petroleum and Minerals | 1576 |
12 |
| Prad Research and Development Limited | 2658 |
12 |
| Baker Hughes Holdings LLC | 3021 |
12 |
| Board of Regents, The University of Texas System | 6117 |
10 |
| Baker Hughes, a GE Company, LLC | 2054 |
10 |
| China National Petroleum Corporation | 637 |
9 |
| Other owners | 387 |