- 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: 2441
10-year publication summary
|
312
|
317
|
224
|
192
|
179
|
108
|
93
|
74
|
88
|
19
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Halliburton Energy Services, Inc. | 21242 |
444 |
| Saudi Arabian Oil Company | 13949 |
151 |
| Schlumberger Technology Corporation | 11549 |
123 |
| Schlumberger Canada Limited | 7571 |
110 |
| Schlumberger Technology B.v. | 5270 |
99 |
| Services Petroliers Schlumberger | 5981 |
98 |
| CARBO Ceramics Inc. | 174 |
93 |
| Schlumberger Holdings Limited | 2730 |
65 |
| ExxonMobil Technology and Engineering Company | 1293 |
57 |
| Prad Research and Development Limited | 2679 |
52 |
| Aramco Services Company | 4162 |
43 |
| Baker Hughes Holdings LLC | 2994 |
39 |
| Dow Global Technologies LLC | 10824 |
29 |
| Baker Hughes, a GE Company, LLC | 2092 |
28 |
| Preferred Technology, LLC | 35 |
25 |
| Baker Hughes Incorporated | 5033 |
23 |
| BASF SE | 21151 |
20 |
| Covia Solutions LLC | 76 |
18 |
| Chevron U.S.A. Inc. | 4103 |
17 |
| China National Petroleum Corporation | 566 |
16 |
| Other owners | 891 |