Patent holdings for IPC class C09K 8/514

Total number of patents in this class: 330

10-year publication summary

23
20
31
49
30
26
12
16
13
7
2016 2017 2018 2019 2020 2021 2022 2023 2024 2025

Principal owners for this class

Owner
All patents
This class
Saudi Arabian Oil Company
13372
93
Halliburton Energy Services, Inc.
20946
53
Aramco Services Company
4025
21
Schlumberger Technology Corporation
10881
20
Schlumberger Canada Limited
7366
12
Schlumberger Technology B.v.
5183
12
Services Petroliers Schlumberger
5828
12
Schlumberger Holdings Limited
2803
8
Prad Research and Development Limited
2692
8
Lyondellbasell Advanced Polymers Inc.
101
5
China Petroleum & Chemical Corporation
1909
4
Oji Holdings Corporation
728
4
Baker Hughes Incorporated
5248
3
Elkem AS
60
3
King Fahd University of Petroleum and Minerals
1272
3
M-I L.L.C.
815
3
Southwest Petroleum University
476
3
ENERGY SOLUTIONS (US) LLC, a Delaware limited liability company
185
3
Albert Einstein College of Medicine, Inc.
578
2
Borregaard AS
125
2
Other owners 56