- 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 29/02 - Cutting or destroying pipes, packers, plugs or wire lines, located in boreholes or wells, e.g. cutting of damaged pipes, of windowsDeforming of pipes in boreholes or wellsReconditioning of well casings while in the ground by explosives or by thermal or chemical means
Patent holdings for IPC class E21B 29/02
Total number of patents in this class: 712
10-year publication summary
|
68
|
50
|
67
|
59
|
65
|
52
|
49
|
38
|
26
|
11
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Halliburton Energy Services, Inc. | 20924 |
102 |
| Robertson Intellectual Properties, LLC | 92 |
37 |
| SPEX Corporate Holdings Limited | 36 |
33 |
| Saudi Arabian Oil Company | 13263 |
28 |
| Baker Hughes Holdings LLC | 3006 |
28 |
| Schlumberger Technology Corporation | 10802 |
24 |
| Baker Hughes, a GE Company, LLC | 2110 |
24 |
| ConocoPhillips Company | 1676 |
20 |
| Interwell P&A AS | 35 |
19 |
| Foro Energy, Inc. | 106 |
18 |
| Bisn Tec Ltd | 79 |
16 |
| W.T. Bell International, Inc. | 18 |
16 |
| SPEX Group Holdings Limited | 14 |
14 |
| Hunting Titan, Inc. | 247 |
13 |
| Baker Hughes Incorporated | 5265 |
11 |
| Geodynamics, Inc. | 193 |
10 |
| Baker Hughes Oilfield Operations, LLC | 2304 |
10 |
| Wells Fargo Bank, National Association | 3893 |
9 |
| Shell Internationale Research Maatschappij B.V. | 3549 |
8 |
| Owen Oil Tools LP | 91 |
7 |
| Other owners | 265 |