- 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 10/40 - Percussion drill bits with leading portion
Patent holdings for IPC class E21B 10/40
Total number of patents in this class: 55
10-year publication summary
|
6
|
5
|
2
|
5
|
3
|
2
|
3
|
2
|
1
|
0
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Sandvik Intellectual Property AB | 1412 |
9 |
| Stabil Drill Technologies, L.L.C. | 8 |
4 |
| Ajax Tool Works, Inc. | 12 |
3 |
| Saudi Arabian Oil Company | 13949 |
3 |
| Mincon Nordic Oy | 15 |
3 |
| Baker Hughes Incorporated | 5033 |
2 |
| Drillroc Pneumatic Pty Ltd | 7 |
2 |
| Welltec AS | 310 |
2 |
| Dynatech Systems, Inc. | 16 |
2 |
| Hard Rock Horizontal Directional Drilling Products, Inc. | 6 |
2 |
| Baker Hughes Holdings LLC | 2994 |
2 |
| Jonathan M. Eve | 2 |
2 |
| Halliburton Energy Services, Inc. | 21242 |
1 |
| Hilti Aktiengesellschaft | 3616 |
1 |
| Smith International, Inc. | 700 |
1 |
| Aramco Services Company | 4162 |
1 |
| Ashmin Holding LLC | 9 |
1 |
| Center Rock Inc. | 47 |
1 |
| Dover BMCS Acquisition Corporation | 6 |
1 |
| Heller Tools GmbH | 24 |
1 |
| Other owners | 11 |