- All sections
- C - Chemistry; metallurgy
- C09K - Materials for applications not otherwise provided for; applications of materials not otherwise provided for
- C09K 8/32 - Non-aqueous well-drilling compositions, e.g. oil-based
Patent holdings for IPC class C09K 8/32
Total number of patents in this class: 428
10-year publication summary
|
40
|
31
|
57
|
39
|
46
|
25
|
16
|
11
|
5
|
2
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Saudi Arabian Oil Company | 11322 |
64 |
| Halliburton Energy Services, Inc. | 20165 |
61 |
| M-I L.L.C. | 893 |
26 |
| Schlumberger Technology Corporation | 9690 |
12 |
| Aramco Services Company | 3504 |
11 |
| Schlumberger Canada Limited | 6913 |
10 |
| Schlumberger Technology B.v. | 4951 |
10 |
| Services Petroliers Schlumberger | 5426 |
10 |
| Schlumberger Holdings Limited | 2947 |
9 |
| Baker Hughes Incorporated | 5689 |
9 |
| ExxonMobil Chemical Patents Inc. | 4286 |
8 |
| Chevron Phillips Chemical Company LP | 1779 |
8 |
| Prad Research and Development Limited | 2696 |
8 |
| Elementis Specialties, Inc. | 129 |
7 |
| Chevron U.S.A. Inc. | 3774 |
6 |
| BYK-Chemie GmbH | 437 |
6 |
| CURTIS, Philip, Anthony | 497 |
6 |
| Durham University | 36 |
5 |
| Emery Oleochemicals GmbH | 111 |
5 |
| Tucc Technology, LLC | 20 |
5 |
| Other owners | 142 |