- 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 11/06 - Other drilling tools with driven cutting chains or similarly-driven tools
Patent holdings for IPC class E21B 11/06
Total number of patents in this class: 13
10-year publication summary
|
0
|
1
|
2
|
0
|
1
|
0
|
0
|
0
|
1
|
0
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Baker Hughes Incorporated | 5252 |
2 |
| Schlumberger Technology Corporation | 10705 |
1 |
| Schlumberger Canada Limited | 7293 |
1 |
| Schlumberger Technology B.v. | 5166 |
1 |
| Schlumberger Holdings Limited | 2831 |
1 |
| Board of Supervisors of Louisiana State University and Agricultural and Mechanical College | 825 |
1 |
| C. & E. FEIN GmbH | 190 |
1 |
| Mactech, Inc. | 2 |
1 |
| Prad Research and Development Limited | 2693 |
1 |
| Services Petroliers Schlumberger | 5784 |
1 |
| Ernest E. Carter, Jr. | 1 |
1 |
| Drillex Ltd | 1 |
1 |
| Other owners | 0 |