Patent holdings for IPC class E21B 17/03

Total number of patents in this class: 234

10-year publication summary

37
31
32
12
8
17
7
10
10
0
2016 2017 2018 2019 2020 2021 2022 2023 2024 2025

Principal owners for this class

Owner
All patents
This class
Halliburton Energy Services, Inc.
20438
41
Weatherford Technology Holdings, LLC
2109
16
Sandvik Intellectual Property AB
1542
13
The Charles Machine Works, Inc.
415
6
J.H. Fletcher & Co.
80
6
Vermeer Manufacturing Company
626
5
Sandvik Mining and Construction Tools AB
163
5
Schlumberger Canada Limited
7154
4
Schlumberger Technology B.v.
5075
4
Baker Hughes Incorporated
5504
4
Smith International, Inc.
740
4
Bauer Maschinen GmbH
219
4
Evolution Engineering Inc.
311
4
National Oilwell Varco, L.P.
1627
4
Noetic Technologies Inc.
125
4
Services Petroliers Schlumberger
5633
4
Tracto-Technik GmbH & Co. KG
171
4
Rival Downhole Tools LC
40
4
Schlumberger Technology Corporation
10263
3
Schlumberger Holdings Limited
2867
3
Other owners 92