- All sections
- C - Chemistry; metallurgy
- C09K - Materials for applications not otherwise provided for; applications of materials not otherwise provided for
- C09K 8/44 - Compositions for cementing, e.g. for cementing casings into boreholes; Compositions for plugging, e.g. for killing wells containing organic binders only
Patent holdings for IPC class C09K 8/44
Total number of patents in this class: 297
10-year publication summary
35
|
39
|
30
|
33
|
35
|
34
|
21
|
22
|
20
|
8
|
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 |
65 |
Saudi Arabian Oil Company | 11322 |
43 |
Aramco Services Company | 3504 |
14 |
Schlumberger Technology Corporation | 9690 |
8 |
Denka Company Limited | 2189 |
8 |
Kuraray Co., Ltd. | 3392 |
8 |
Hilti Aktiengesellschaft | 3227 |
6 |
Southwest Petroleum University | 403 |
6 |
ENERGY SOLUTIONS (US) LLC, a Delaware limited liability company | 211 |
6 |
Schlumberger Canada Limited | 6913 |
5 |
China Petroleum & Chemical Corporation | 1623 |
5 |
Baker Hughes Holdings LLC | 3060 |
5 |
Schlumberger Technology B.v. | 4951 |
4 |
BASF SE | 19740 |
4 |
Chevron U.S.A. Inc. | 3774 |
4 |
ConocoPhillips Company | 1657 |
4 |
Services Petroliers Schlumberger | 5426 |
4 |
Baker Hughes Oilfield Operations, LLC | 1885 |
4 |
Baker Hughes, a GE Company, LLC | 2171 |
4 |
SNF Group | 251 |
4 |
Other owners | 86 |