- 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: 171
10-year publication summary
|
14
|
15
|
17
|
7
|
10
|
5
|
4
|
6
|
0
|
4
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Baker Hughes Incorporated | 5273 |
37 |
| Smith International, Inc. | 719 |
28 |
| Baker Hughes Holdings LLC | 3004 |
22 |
| Halliburton Energy Services, Inc. | 20862 |
12 |
| Southwest Petroleum University | 466 |
9 |
| National Oilwell Varco, L.P. | 1665 |
6 |
| SF Diamond Co.,Ltd. | 32 |
5 |
| Sandvik Mining and Construction Tools AB | 173 |
5 |
| Schlumberger Technology Corporation | 10673 |
3 |
| Element Six (production) (Pty) Ltd | 70 |
3 |
| National Oilwell DHT, L.P. | 130 |
3 |
| Varel International Ind., L.P. | 69 |
3 |
| Chengdu Weiyi Petroleum Technology Co., Ltd. | 6 |
3 |
| Kennametal Inc. | 1386 |
2 |
| Kingdream Public Limited Company | 25 |
2 |
| REI, Inc. | 23 |
2 |
| Sandvik Intellectual Property AB | 1484 |
2 |
| Ulterra Drilling Technologies, L.P. | 125 |
2 |
| US Synthetic Corporation | 624 |
2 |
| VSL International AG | 87 |
2 |
| Other owners | 18 |