- 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 29/06 - Cutting windows, e.g. directional window cutters for whipstock operations
Patent holdings for IPC class E21B 29/06
Total number of patents in this class: 421
10-year publication summary
|
35
|
15
|
26
|
16
|
30
|
32
|
29
|
30
|
18
|
12
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Halliburton Energy Services, Inc. | 20946 |
110 |
| Baker Hughes Oilfield Operations, LLC | 2322 |
43 |
| Weatherford Technology Holdings, LLC | 2029 |
27 |
| Baker Hughes Holdings LLC | 3001 |
22 |
| Baker Hughes Incorporated | 5248 |
21 |
| Saudi Arabian Oil Company | 13372 |
18 |
| Schlumberger Technology Corporation | 10881 |
13 |
| Coiled Tubing Specialties, LLC | 31 |
9 |
| ConocoPhillips Company | 1675 |
8 |
| Wellbore Integrity Solutions LLC | 93 |
8 |
| Schlumberger Canada Limited | 7366 |
7 |
| Abrado, Inc. | 27 |
7 |
| Odfjell Technology Invest Ltd | 24 |
6 |
| Schlumberger Technology B.v. | 5183 |
5 |
| Aarbakke Innovation A.S. | 30 |
5 |
| Robertson Intellectual Properties, LLC | 92 |
5 |
| Services Petroliers Schlumberger | 5828 |
5 |
| Welltec AS | 299 |
5 |
| Baker Hughes, a GE Company, LLC | 2110 |
5 |
| Aramco Services Company | 4025 |
4 |
| Other owners | 88 |