Patent holdings for IPC class C09K 8/03

Total number of patents in this class: 1220

10-year publication summary

106
110
108
105
80
79
41
45
33
38
2016 2017 2018 2019 2020 2021 2022 2023 2024 2025

Principal owners for this class

Owner
All patents
This class
Halliburton Energy Services, Inc.
20964
260
Saudi Arabian Oil Company
13409
197
Aramco Services Company
4033
50
Schlumberger Technology Corporation
10898
40
M-I L.L.C.
813
38
Schlumberger Technology B.v.
5184
28
Baker Hughes Incorporated
5246
28
Schlumberger Canada Limited
7369
27
Services Petroliers Schlumberger
5830
27
Championx LLC
531
20
Dorf Ketal Chemicals FZE
199
17
Tetra Technologies, Inc.
103
15
Schlumberger Holdings Limited
2800
13
Nissan Chemical America Corporation
63
13
King Fahd University of Petroleum and Minerals
1280
12
Prad Research and Development Limited
2691
12
Baker Hughes Holdings LLC
2999
12
Board of Regents, The University of Texas System
5869
10
Baker Hughes, a GE Company, LLC
2109
10
Chevron U.S.A. Inc.
3996
8
Other owners 383