- All sections
- C - Chemistry; metallurgy
- C09K - Materials for applications not otherwise provided for; applications of materials not otherwise provided for
- C09K 8/42 - Compositions for cementing, e.g. for cementing casings into boreholes; Compositions for plugging, e.g. for killing wells
Patent holdings for IPC class C09K 8/42
Total number of patents in this class: 1344
10-year publication summary
|
103
|
145
|
135
|
123
|
118
|
98
|
75
|
51
|
53
|
24
|
| 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 |
374 |
| Saudi Arabian Oil Company | 11322 |
151 |
| Schlumberger Technology Corporation | 9690 |
83 |
| Schlumberger Canada Limited | 6913 |
68 |
| Services Petroliers Schlumberger | 5426 |
60 |
| Schlumberger Technology B.v. | 4951 |
59 |
| CURTIS, Philip, Anthony | 497 |
38 |
| Schlumberger Holdings Limited | 2947 |
37 |
| Prad Research and Development Limited | 2696 |
31 |
| Aramco Services Company | 3504 |
26 |
| Flotek Chemistry, LLC | 120 |
15 |
| Southwest Petroleum University | 403 |
15 |
| Baker Hughes, a GE Company, LLC | 2171 |
11 |
| Thru Tubing Solutions, Inc. | 361 |
10 |
| Baker Hughes Holdings LLC | 3060 |
10 |
| Baker Hughes Incorporated | 5689 |
9 |
| Bisn Tec Ltd | 74 |
8 |
| ConocoPhillips Company | 1657 |
8 |
| Kureha Corporation | 1026 |
8 |
| M-I L.L.C. | 893 |
8 |
| Other owners | 315 |