- All sections
- C - Chemistry; metallurgy
- C09K - Materials for applications not otherwise provided for; applications 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: 1163
10-year publication summary
|
92
|
119
|
131
|
121
|
120
|
90
|
84
|
45
|
45
|
11
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Halliburton Energy Services, Inc. | 20165 |
265 |
| Saudi Arabian Oil Company | 11322 |
186 |
| M-I L.L.C. | 893 |
41 |
| Aramco Services Company | 3504 |
40 |
| Schlumberger Technology Corporation | 9690 |
39 |
| Baker Hughes Incorporated | 5689 |
29 |
| Schlumberger Technology B.v. | 4951 |
27 |
| Schlumberger Canada Limited | 6913 |
26 |
| Services Petroliers Schlumberger | 5426 |
26 |
| Tetra Technologies, Inc. | 90 |
15 |
| Baker Hughes Holdings LLC | 3060 |
14 |
| Schlumberger Holdings Limited | 2947 |
13 |
| Nissan Chemical America Corporation | 57 |
13 |
| Prad Research and Development Limited | 2696 |
12 |
| Dorf Ketal Chemicals FZE | 238 |
12 |
| Board of Regents, The University of Texas System | 5370 |
10 |
| Baker Hughes, a GE Company, LLC | 2171 |
10 |
| CURTIS, Philip, Anthony | 497 |
9 |
| Championx LLC | 311 |
9 |
| Chevron U.S.A. Inc. | 3774 |
8 |
| Other owners | 359 |