- 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 37/06 - Methods or apparatus for cleaning boreholes or wells using chemical means for preventing or limiting the deposition of paraffins or like substances
Patent holdings for IPC class E21B 37/06
Total number of patents in this class: 967
10-year publication summary
|
91
|
91
|
72
|
67
|
65
|
72
|
54
|
60
|
48
|
71
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Halliburton Energy Services, Inc. | 21021 |
136 |
| Saudi Arabian Oil Company | 13622 |
90 |
| Schlumberger Technology Corporation | 11023 |
29 |
| Schlumberger Canada Limited | 7418 |
24 |
| Cameron International Corporation | 1351 |
23 |
| Baker Hughes Holdings LLC | 3005 |
23 |
| Baker Hughes Oilfield Operations, LLC | 2380 |
22 |
| Petroleo Brasileiro S.A. - Petrobras | 879 |
20 |
| Ecolab USA Inc. | 5587 |
17 |
| Championx USA Inc. | 176 |
17 |
| Baker Hughes Incorporated | 5179 |
16 |
| M-I L.L.C. | 806 |
14 |
| Dorf Ketal Chemicals FZE | 200 |
14 |
| Baker Hughes, a GE Company, LLC | 2107 |
13 |
| Championx LLC | 547 |
13 |
| Aramco Services Company | 4090 |
12 |
| ConocoPhillips Company | 1682 |
12 |
| Services Petroliers Schlumberger | 5874 |
10 |
| Locus Solutions IPCo, LLC | 332 |
10 |
| OneSubsea IP UK Limited | 424 |
9 |
| Other owners | 443 |