- 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 10/34 - Drill bits with leading portion, i.e. drill bits with a pilot cutterDrill bits for enlarging the borehole, e.g. reamers with expansible cutting tools of roller-cutter type
Patent holdings for IPC class E21B 10/34
Total number of patents in this class: 36
10-year publication summary
|
1
|
2
|
1
|
7
|
3
|
4
|
3
|
2
|
1
|
2
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Saudi Arabian Oil Company | 13206 |
5 |
| Halliburton Energy Services, Inc. | 20908 |
4 |
| Baker Hughes Incorporated | 5238 |
3 |
| Baker Hughes Oilfield Operations, LLC | 2313 |
3 |
| Aramco Services Company | 3981 |
2 |
| Evolution Engineering Inc. | 301 |
2 |
| NOV Downhole Eurasia Limited | 45 |
2 |
| Paul Bernard Lee | 2 |
2 |
| BYWORTH, Ian James | 11 |
2 |
| Smith International, Inc. | 717 |
1 |
| Herrenknecht AG | 203 |
1 |
| Hpm - Hydraulic Performance Machines S.r.l. | 10 |
1 |
| Korea Resources Corporation | 3 |
1 |
| SKF USA Inc. | 52 |
1 |
| Transco Manufacturing Australia Pty Ltd | 6 |
1 |
| Exacta-Frac Energy Services, Inc. | 55 |
1 |
| Altus Intervention (technologies) AS | 66 |
1 |
| BYWORTH, Ian | 3 |
1 |
| Corteva Agriscience LLC | 2664 |
1 |
| Allen Kent Rives | 1 |
1 |
| Other owners | 0 |