- 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: 2419
10-year publication summary
|
336
|
312
|
317
|
224
|
192
|
179
|
108
|
93
|
71
|
44
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Halliburton Energy Services, Inc. | 20879 |
445 |
| Saudi Arabian Oil Company | 13091 |
149 |
| Schlumberger Technology Corporation | 10705 |
121 |
| Schlumberger Canada Limited | 7293 |
110 |
| Schlumberger Technology B.v. | 5166 |
100 |
| Services Petroliers Schlumberger | 5784 |
99 |
| CARBO Ceramics Inc. | 237 |
85 |
| Schlumberger Holdings Limited | 2831 |
67 |
| Prad Research and Development Limited | 2693 |
52 |
| Aramco Services Company | 3955 |
43 |
| Baker Hughes Holdings LLC | 3007 |
40 |
| ExxonMobil Technology and Engineering Company | 1077 |
40 |
| Dow Global Technologies LLC | 10352 |
29 |
| Baker Hughes, a GE Company, LLC | 2112 |
28 |
| Preferred Technology, LLC | 35 |
25 |
| Baker Hughes Incorporated | 5252 |
23 |
| CURTIS, Philip, Anthony | 428 |
21 |
| BASF SE | 20926 |
20 |
| Trican Well Service Ltd. | 79 |
18 |
| Covia Solutions LLC | 70 |
18 |
| Other owners | 886 |