- All sections
- C - Chemistrymetallurgy
- C09K - Materials for applications not otherwise provided forapplications of materials not otherwise provided for
- C09K 8/80 - Compositions for reinforcing fractures, e.g. compositions of proppants used to keep the fractures open
Patent holdings for IPC class C09K 8/80
Total number of patents in this class: 2405
10-year publication summary
|
336
|
312
|
317
|
224
|
192
|
179
|
108
|
93
|
71
|
26
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Halliburton Energy Services, Inc. | 20749 |
446 |
| Saudi Arabian Oil Company | 12858 |
148 |
| Schlumberger Technology Corporation | 10627 |
120 |
| Schlumberger Canada Limited | 7235 |
110 |
| Schlumberger Technology B.v. | 5148 |
100 |
| Services Petroliers Schlumberger | 5756 |
99 |
| CARBO Ceramics Inc. | 237 |
84 |
| Schlumberger Holdings Limited | 2841 |
67 |
| Prad Research and Development Limited | 2694 |
52 |
| Aramco Services Company | 3910 |
43 |
| Baker Hughes Holdings LLC | 3007 |
40 |
| Dow Global Technologies LLC | 10354 |
29 |
| Baker Hughes, a GE Company, LLC | 2115 |
28 |
| ExxonMobil Technology and Engineering Company | 1042 |
28 |
| Preferred Technology, LLC | 35 |
25 |
| Baker Hughes Incorporated | 5289 |
23 |
| CURTIS, Philip, Anthony | 440 |
21 |
| BASF SE | 20777 |
20 |
| Trican Well Service Ltd. | 79 |
18 |
| S.p.c.m. SA | 249 |
15 |
| Other owners | 889 |