Patent holdings for IPC class E21B 10/50

Total number of patents in this class: 172

10-year publication summary

14
15
15
7
9
4
3
5
0
5
2016 2017 2018 2019 2020 2021 2022 2023 2024 2025

Principal owners for this class

Owner
All patents
This class
Baker Hughes Incorporated
5248
37
Smith International, Inc.
718
28
Baker Hughes Holdings LLC
3001
22
Halliburton Energy Services, Inc.
20946
12
Southwest Petroleum University
476
9
National Oilwell Varco, L.P.
1686
6
SF Diamond Co.,Ltd.
32
5
Sandvik Mining and Construction Tools AB
173
5
Schlumberger Technology Corporation
10881
4
Element Six (production) (Pty) Ltd
67
3
National Oilwell DHT, L.P.
123
3
Varel International Ind., L.P.
69
3
Chengdu Weiyi Petroleum Technology Co., Ltd.
6
3
Kennametal Inc.
1389
2
Kingdream Public Limited Company
25
2
REI, Inc.
23
2
Sandvik Intellectual Property AB
1475
2
Ulterra Drilling Technologies, L.P.
124
2
US Synthetic Corporation
617
2
VSL International AG
89
2
Other owners 18