- 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: 940
10-year publication summary
|
91
|
91
|
72
|
67
|
65
|
72
|
54
|
60
|
48
|
50
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Halliburton Energy Services, Inc. | 20937 |
132 |
| Saudi Arabian Oil Company | 13316 |
84 |
| Schlumberger Technology Corporation | 10848 |
29 |
| Baker Hughes Holdings LLC | 3003 |
23 |
| Cameron International Corporation | 1339 |
22 |
| Baker Hughes Oilfield Operations, LLC | 2319 |
22 |
| Schlumberger Canada Limited | 7357 |
21 |
| Petroleo Brasileiro S.A. - Petrobras | 859 |
20 |
| Ecolab USA Inc. | 5509 |
17 |
| Championx USA Inc. | 178 |
17 |
| Baker Hughes Incorporated | 5254 |
16 |
| M-I L.L.C. | 817 |
14 |
| Dorf Ketal Chemicals FZE | 199 |
14 |
| Baker Hughes, a GE Company, LLC | 2110 |
13 |
| Aramco Services Company | 4007 |
12 |
| ConocoPhillips Company | 1678 |
11 |
| Services Petroliers Schlumberger | 5823 |
10 |
| Locus Solutions IPCo, LLC | 327 |
10 |
| OneSubsea IP UK Limited | 423 |
9 |
| Championx LLC | 527 |
9 |
| Other owners | 435 |