- 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 10/56 - Button-type inserts
Patent holdings for IPC class E21B 10/56
Total number of patents in this class: 334
10-year publication summary
|
44
|
31
|
29
|
38
|
16
|
16
|
12
|
13
|
11
|
3
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Baker Hughes Holdings LLC | 3004 |
37 |
| Smith International, Inc. | 719 |
29 |
| US Synthetic Corporation | 624 |
27 |
| Baker Hughes Incorporated | 5273 |
25 |
| Halliburton Energy Services, Inc. | 20862 |
16 |
| Element Six Abrasives S.A. | 147 |
14 |
| Element Six (UK) Limited | 216 |
14 |
| Schlumberger Technology Corporation | 10673 |
13 |
| National Oilwell DHT, L.P. | 130 |
9 |
| Schlumberger Canada Limited | 7283 |
8 |
| Sandvik Intellectual Property AB | 1484 |
8 |
| Epiroc Drilling Tools Aktiebolag | 82 |
8 |
| Sandvik Mining and Construction Tools AB | 173 |
8 |
| Schlumberger Technology B.v. | 5164 |
7 |
| National Oilwell Varco, L.P. | 1665 |
7 |
| Services Petroliers Schlumberger | 5775 |
7 |
| Diamond Innovations, Inc. | 235 |
6 |
| Element Six Limited | 119 |
5 |
| Ulterra Drilling Technologies, L.P. | 125 |
5 |
| Kennametal Inc. | 1386 |
4 |
| Other owners | 77 |