- 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: 62
10-year publication summary
|
8
|
6
|
6
|
5
|
2
|
5
|
3
|
2
|
3
|
0
|
| 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 |
13 |
| Ashmin Holding LLC | 19 |
6 |
| Hilti Aktiengesellschaft | 3227 |
3 |
| Ajax Tool Works, Inc. | 12 |
3 |
| Mincon Nordic Oy | 13 |
3 |
| Baker Hughes Incorporated | 5689 |
2 |
| Drillroc Pneumatic Pty Ltd | 7 |
2 |
| Tracto-Technik GmbH & Co. KG | 166 |
2 |
| Welltec AS | 301 |
2 |
| Dynatech Systems, Inc. | 17 |
2 |
| Hard Rock Horizontal Directional Drilling Products, Inc. | 6 |
2 |
| Baker Hughes Holdings LLC | 3060 |
2 |
| Schlumberger Technology Corporation | 9690 |
1 |
| Halliburton Energy Services, Inc. | 20165 |
1 |
| Smith International, Inc. | 761 |
1 |
| Ashmin LC | 8 |
1 |
| Center Rock Inc. | 36 |
1 |
| Dover BMCS Acquisition Corporation | 6 |
1 |
| Geo-mole Limited | 6 |
1 |
| Heller Tools GmbH | 19 |
1 |
| Other owners | 12 |