- All sections
- C - Chemistry; metallurgy
- C09K - Materials for applications not otherwise provided for; applications 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: 2411
10-year publication summary
|
232
|
335
|
312
|
317
|
224
|
192
|
179
|
107
|
87
|
20
|
| 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 |
460 |
| Saudi Arabian Oil Company | 11322 |
136 |
| Schlumberger Technology Corporation | 9690 |
115 |
| Schlumberger Canada Limited | 6913 |
111 |
| Schlumberger Technology B.v. | 4951 |
100 |
| Services Petroliers Schlumberger | 5426 |
99 |
| CARBO Ceramics Inc. | 248 |
86 |
| Schlumberger Holdings Limited | 2947 |
69 |
| Prad Research and Development Limited | 2696 |
52 |
| Baker Hughes Holdings LLC | 3060 |
43 |
| Aramco Services Company | 3504 |
37 |
| Dow Global Technologies LLC | 10147 |
30 |
| CURTIS, Philip, Anthony | 497 |
29 |
| Baker Hughes Incorporated | 5689 |
28 |
| Preferred Technology, LLC | 38 |
28 |
| Baker Hughes, a GE Company, LLC | 2171 |
28 |
| ExxonMobil Technology and Engineering Company | 676 |
21 |
| BASF SE | 19740 |
20 |
| Hexion Inc. | 207 |
20 |
| S.p.c.m. SA | 308 |
19 |
| Other owners | 880 |