- All sections
- E - Fixed constructions
- E21B - Earth or rock drillingobtaining 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: 64
10-year publication summary
|
3
|
9
|
0
|
3
|
3
|
2
|
1
|
3
|
0
|
0
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Robert Bosch GmbH | 44254 |
6 |
| Smith International, Inc. | 691 |
6 |
| Baker Hughes Holdings LLC | 3020 |
6 |
| Kennametal Inc. | 1355 |
5 |
| US Synthetic Corporation | 617 |
5 |
| Schlumberger Technology Corporation | 11879 |
3 |
| Metal Tool Inc. | 11 |
3 |
| Schlumberger Canada Limited | 7620 |
2 |
| Black & Decker, Inc. | 2457 |
2 |
| Diager | 10 |
2 |
| Element Six Abrasives S.A. | 145 |
2 |
| Element Six GmbH | 112 |
2 |
| Schlumberger Technology B.v. | 5299 |
1 |
| Baker Hughes Incorporated | 4905 |
1 |
| Halliburton Energy Services, Inc. | 21309 |
1 |
| Hilti Aktiengesellschaft | 3701 |
1 |
| Bosch Power Tools (China) Co., Ltd. | 86 |
1 |
| China National Petroleum Corporation | 641 |
1 |
| CNPC USA Corp. | 181 |
1 |
| Dover BMCS Acquisition Corporation | 6 |
1 |
| Other owners | 12 |