- 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 10/58 - Chisel-type inserts
Patent holdings for IPC class E21B 10/58
Total number of patents in this class: 69
10-year publication summary
|
3
|
5
|
3
|
9
|
0
|
3
|
3
|
1
|
1
|
2
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Robert Bosch GmbH | 40953 |
8 |
| Kennametal Inc. | 1380 |
7 |
| Smith International, Inc. | 761 |
6 |
| Baker Hughes Holdings LLC | 3060 |
6 |
| US Synthetic Corporation | 601 |
5 |
| Schlumberger Technology Corporation | 9690 |
3 |
| Sandvik Intellectual Property AB | 1634 |
3 |
| Metal Tool Inc. | 9 |
3 |
| Black & Decker, Inc. | 2402 |
2 |
| Diager | 9 |
2 |
| Element Six Abrasives S.A. | 148 |
2 |
| Element Six GmbH | 99 |
2 |
| National Oilwell DHT, L.P. | 159 |
2 |
| Schlumberger Canada Limited | 6913 |
1 |
| Schlumberger Technology B.v. | 4951 |
1 |
| Baker Hughes Incorporated | 5689 |
1 |
| Halliburton Energy Services, Inc. | 20165 |
1 |
| Hilti Aktiengesellschaft | 3227 |
1 |
| Bosch Power Tools (China) Co., Ltd. | 76 |
1 |
| China National Petroleum Corporation | 245 |
1 |
| Other owners | 11 |