- 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: 1220
10-year publication summary
106
|
110
|
108
|
105
|
80
|
79
|
41
|
45
|
33
|
38
|
2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
Owner |
All patents
|
This class
|
---|---|---|
Halliburton Energy Services, Inc. | 20964 |
260 |
Saudi Arabian Oil Company | 13409 |
197 |
Aramco Services Company | 4033 |
50 |
Schlumberger Technology Corporation | 10898 |
40 |
M-I L.L.C. | 813 |
38 |
Schlumberger Technology B.v. | 5184 |
28 |
Baker Hughes Incorporated | 5246 |
28 |
Schlumberger Canada Limited | 7369 |
27 |
Services Petroliers Schlumberger | 5830 |
27 |
Championx LLC | 531 |
20 |
Dorf Ketal Chemicals FZE | 199 |
17 |
Tetra Technologies, Inc. | 103 |
15 |
Schlumberger Holdings Limited | 2800 |
13 |
Nissan Chemical America Corporation | 63 |
13 |
King Fahd University of Petroleum and Minerals | 1280 |
12 |
Prad Research and Development Limited | 2691 |
12 |
Baker Hughes Holdings LLC | 2999 |
12 |
Board of Regents, The University of Texas System | 5869 |
10 |
Baker Hughes, a GE Company, LLC | 2109 |
10 |
Chevron U.S.A. Inc. | 3996 |
8 |
Other owners | 383 |