- 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 10/40 - Percussion drill bits with leading portion
Patent holdings for IPC class E21B 10/40
Total number of patents in this class: 65
10-year publication summary
|
6
|
6
|
5
|
2
|
5
|
3
|
2
|
3
|
1
|
0
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Sandvik Intellectual Property AB | 1546 |
13 |
| Ashmin Holding LLC | 18 |
6 |
| Hilti Aktiengesellschaft | 3363 |
3 |
| Ajax Tool Works, Inc. | 12 |
3 |
| Mincon Nordic Oy | 13 |
3 |
| Baker Hughes Incorporated | 5514 |
2 |
| Drillroc Pneumatic Pty Ltd | 7 |
2 |
| Saudi Arabian Oil Company | 12390 |
2 |
| Tracto-Technik GmbH & Co. KG | 171 |
2 |
| Welltec AS | 297 |
2 |
| Dynatech Systems, Inc. | 17 |
2 |
| Hard Rock Horizontal Directional Drilling Products, Inc. | 6 |
2 |
| Baker Hughes Holdings LLC | 3013 |
2 |
| Jonathan M. Eve | 2 |
2 |
| Schlumberger Technology Corporation | 10217 |
1 |
| Halliburton Energy Services, Inc. | 20403 |
1 |
| Smith International, Inc. | 741 |
1 |
| Aramco Services Company | 3735 |
1 |
| Ashmin LC | 8 |
1 |
| Center Rock Inc. | 38 |
1 |
| Other owners | 13 |