- All sections
- C - Chemistry; metallurgy
- C09K - Materials for applications not otherwise provided for; applications of materials not otherwise provided for
- C09K 8/02 - Well-drilling compositions
Patent holdings for IPC class C09K 8/02
Total number of patents in this class: 365
10-year publication summary
|
43
|
80
|
45
|
16
|
11
|
13
|
11
|
9
|
5
|
1
|
| 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 |
96 |
| Schlumberger Technology Corporation | 9690 |
21 |
| M-I L.L.C. | 893 |
20 |
| Schlumberger Canada Limited | 6913 |
16 |
| Schlumberger Technology B.v. | 4951 |
16 |
| Services Petroliers Schlumberger | 5426 |
16 |
| Baker Hughes Incorporated | 5689 |
14 |
| Saudi Arabian Oil Company | 11322 |
12 |
| Schlumberger Holdings Limited | 2947 |
7 |
| Prad Research and Development Limited | 2696 |
7 |
| ExxonMobil Upstream Research Company | 2525 |
5 |
| Chevron U.S.A. Inc. | 3774 |
4 |
| Kureha Corporation | 1026 |
4 |
| The Lubrizol Corporation | 1335 |
4 |
| Baker Hughes, a GE Company, LLC | 2171 |
4 |
| Aramco Services Company | 3504 |
3 |
| Ecolab USA Inc. | 5190 |
3 |
| Fiber Resources, Inc. | 3 |
3 |
| WAIN, Christopher, Paul | 88 |
3 |
| ConocoPhillips Company | 1657 |
2 |
| Other owners | 105 |