Patent holdings for IPC class C09K 8/88

Total number of patents in this class: 842

10-year publication summary

71
134
117
98
94
84
58
40
32
7
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
168
Saudi Arabian Oil Company
11322
57
Baker Hughes Holdings LLC
3060
31
Schlumberger Technology Corporation
9690
30
ENERGY SOLUTIONS (US) LLC, a Delaware limited liability company
211
28
Aramco Services Company
3504
19
BASF SE
19740
18
Chevron U.S.A. Inc.
3774
18
Independence Oilfield Chemicals, LLC
33
18
Schlumberger Canada Limited
6913
16
Schlumberger Technology B.v.
4951
16
Services Petroliers Schlumberger
5426
16
Rhodia Operations
1645
14
S.p.c.m. SA
308
14
Baker Hughes, a GE Company, LLC
2171
14
Schlumberger Holdings Limited
2947
12
Prad Research and Development Limited
2696
12
Baker Hughes Incorporated
5689
11
Sterling Specialty Chemicals Holding UK Limited
56
10
Chevron Oronite Company LLC
551
9
Other owners 311