- 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: 2436
10-year publication summary
|
336
|
312
|
317
|
224
|
192
|
179
|
107
|
93
|
71
|
17
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Halliburton Energy Services, Inc. | 20566 |
446 |
| Saudi Arabian Oil Company | 12701 |
152 |
| Schlumberger Technology Corporation | 10392 |
119 |
| Schlumberger Canada Limited | 7188 |
112 |
| Schlumberger Technology B.v. | 5093 |
101 |
| Services Petroliers Schlumberger | 5666 |
100 |
| CARBO Ceramics Inc. | 243 |
86 |
| Schlumberger Holdings Limited | 2860 |
69 |
| Prad Research and Development Limited | 2696 |
52 |
| Aramco Services Company | 3814 |
44 |
| Baker Hughes Holdings LLC | 3033 |
42 |
| Dow Global Technologies LLC | 10227 |
29 |
| Baker Hughes, a GE Company, LLC | 2123 |
28 |
| ExxonMobil Technology and Engineering Company | 963 |
28 |
| Preferred Technology, LLC | 37 |
27 |
| Baker Hughes Incorporated | 5460 |
25 |
| CURTIS, Philip, Anthony | 470 |
22 |
| BASF SE | 20580 |
20 |
| Trican Well Service Ltd. | 81 |
18 |
| S.p.c.m. SA | 288 |
16 |
| Other owners | 900 |