- All sections
- E - Fixed constructions
- E21B - Earth or rock drilling; obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B 10/52 - Drill bits characterised by wear resisting parts, e.g. diamond inserts the bit being of roller type with chisel- or button-type inserts
Patent holdings for IPC class E21B 10/52
Total number of patents in this class: 103
10-year publication summary
|
12
|
9
|
4
|
6
|
7
|
7
|
6
|
4
|
4
|
0
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Smith International, Inc. | 740 |
17 |
| Baker Hughes Incorporated | 5504 |
11 |
| US Synthetic Corporation | 610 |
10 |
| Baker Hughes Holdings LLC | 3009 |
9 |
| National Oilwell DHT, L.P. | 147 |
8 |
| Schlumberger Technology Corporation | 10263 |
5 |
| National Oilwell Varco, L.P. | 1627 |
4 |
| Element Six (UK) Limited | 203 |
4 |
| Halliburton Energy Services, Inc. | 20438 |
3 |
| Mitsubishi Materials Corporation | 2406 |
3 |
| Saudi Arabian Oil Company | 12446 |
3 |
| Ulterra Drilling Technologies, L.P. | 127 |
3 |
| Varel International Ind., LLC | 44 |
3 |
| Komatsu Ltd. | 4418 |
2 |
| Taurex Drill Bits LLC | 17 |
2 |
| Kennametal Inc. | 1386 |
1 |
| PDB Tools, Inc. | 2 |
1 |
| Sandvik Intellectual Property AB | 1542 |
1 |
| SANYO Special Steel Co., Ltd. | 214 |
1 |
| Shanghai Gogoal Industry Co.,Ltd. | 3 |
1 |
| Other owners | 11 |