- All sections
- E - Fixed constructions
- E21B - Earth or rock drillingobtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B 10/50 - Drill bits characterised by wear resisting parts, e.g. diamond inserts the bit being of roller type
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 |