Patent holdings for IPC class C09K 8/506

Total number of patents in this class: 335

10-year publication summary

8
24
42
67
25
21
7
4
4
0
2016 2017 2018 2019 2020 2021 2022 2023 2024 2025

Principal owners for this class

Owner
All patents
This class
Saudi Arabian Oil Company
12446
112
Halliburton Energy Services, Inc.
20438
52
Aramco Services Company
3750
38
Schlumberger Canada Limited
7154
8
Schlumberger Technology B.v.
5075
8
Services Petroliers Schlumberger
5633
8
Schlumberger Holdings Limited
2867
7
CURTIS, Philip, Anthony
496
7
Baker Hughes Incorporated
5504
6
Baker Hughes Holdings LLC
3009
6
The Lubrizol Corporation
1313
5
M-I L.L.C.
855
5
Prad Research and Development Limited
2696
5
Schlumberger Technology Corporation
10263
4
Massachusetts Institute of Technology
9913
4
Dpip, LLC
5
3
Shell USA, Inc.
1137
3
Schlumberger Norge AS
74
2
3m Innovative Properties Company
17957
2
Shell Internationale Research Maatschappij B.V.
3722
2
Other owners 48