- 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 10/12 - Roller bits with disc cutters
Patent holdings for IPC class E21B 10/12
Total number of patents in this class: 57
10-year publication summary
|
1
|
5
|
9
|
1
|
3
|
2
|
4
|
0
|
1
|
1
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Sandvik Intellectual Property AB | 1479 |
5 |
| Baker Hughes Incorporated | 5259 |
4 |
| Halliburton Energy Services, Inc. | 20949 |
4 |
| US Synthetic Corporation | 617 |
4 |
| Sandvik Mining and Construction Tools AB | 172 |
4 |
| The Robbins Company | 9 |
3 |
| Bouygues Travaux Publics | 28 |
2 |
| HYDAC Technology GmbH | 237 |
2 |
| Southwest Petroleum University | 474 |
2 |
| Ulterra Drilling Technologies, L.P. | 124 |
2 |
| Sichuan Deep & Fast Oil Drilling Tools Co., Ltd | 4 |
2 |
| AB Sandvik Materials Technology, | 28 |
2 |
| Sandvik Powder Solutions AB | 2 |
2 |
| Schlumberger Technology Corporation | 10820 |
1 |
| Caterpillar Inc. | 9594 |
1 |
| Makita Corporation | 2452 |
1 |
| Smith International, Inc. | 719 |
1 |
| Herrenknecht AG | 203 |
1 |
| Kingdream Public Ltd. Co. | 6 |
1 |
| Longyear TM, Inc. | 100 |
1 |
| Other owners | 12 |