- 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 10/25 - Roller bits characterised by bearing, lubrication or sealing details characterised by sealing details
Patent holdings for IPC class E21B 10/25
Total number of patents in this class: 110
10-year publication summary
|
13
|
4
|
7
|
9
|
6
|
8
|
1
|
4
|
4
|
4
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Baker Hughes Incorporated | 5168 |
16 |
| Baker Hughes Holdings LLC | 3000 |
15 |
| Halliburton Energy Services, Inc. | 21103 |
10 |
| Schlumberger Technology Corporation | 11089 |
6 |
| Caterpillar Inc. | 9866 |
5 |
| Sandvik Intellectual Property AB | 1453 |
5 |
| Sandvik Mining and Construction Tools AB | 179 |
5 |
| Southwest Petroleum University | 487 |
4 |
| Varel International Ind., L.P. | 69 |
4 |
| Schlumberger Canada Limited | 7446 |
3 |
| Schlumberger Technology B.v. | 5224 |
3 |
| Atlas Copco Secoroc LLC | 19 |
3 |
| Services Petroliers Schlumberger | 5888 |
3 |
| Baker Hughes Oilfield Operations, LLC | 2395 |
3 |
| Terelion, LLC | 51 |
3 |
| Kalsi Engineering, Inc. | 56 |
2 |
| Baker Hughes, a GE Company, LLC | 2103 |
2 |
| Epiroc Drilling Tools LLC | 29 |
2 |
| Smith International, Inc. | 713 |
1 |
| Chengdu Best Diamond Bit Co., Ltd. | 7 |
1 |
| Other owners | 14 |