- 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 10/38 - Percussion drill bits characterised by conduits or nozzles for drilling fluids
Patent holdings for IPC class E21B 10/38
Total number of patents in this class: 126
10-year publication summary
|
12
|
19
|
7
|
17
|
6
|
17
|
8
|
8
|
4
|
6
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Sandvik Intellectual Property AB | 1634 |
15 |
| Sandvik Mining and Construction Tools AB | 147 |
13 |
| Sandvik Mining and Construction Oy | 703 |
6 |
| Oy Atlas Copco Rotex Ab | 18 |
5 |
| Baker Hughes Incorporated | 5689 |
4 |
| Mincon Nordic Oy | 13 |
4 |
| MMC Ryotec Corporation | 21 |
4 |
| China University of Petroleum (East China) | 319 |
3 |
| Varel International Ind., L.P. | 73 |
3 |
| Hard Rock Horizontal Directional Drilling Products, Inc. | 6 |
3 |
| Center Rock Inc. | 36 |
2 |
| Louisiana Tech University Research Foundation | 19 |
2 |
| Strada Design Limited | 9 |
2 |
| TMT - Tapping Measuring Technology SARL | 29 |
2 |
| Kamco North Holding Company Inc. | 6 |
2 |
| Robit Oyj | 13 |
2 |
| Boart Longyear Company | 262 |
2 |
| Terraroc Finland Oy | 21 |
2 |
| Baker Hughes Holdings LLC | 3060 |
2 |
| Aros, Jaime Andres | 2 |
2 |
| Other owners | 46 |