- 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: 1011
10-year publication summary
|
116
|
84
|
79
|
74
|
86
|
60
|
67
|
55
|
87
|
49
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Halliburton Energy Services, Inc. | 21292 |
136 |
| Saudi Arabian Oil Company | 14369 |
105 |
| Schlumberger Technology Corporation | 11940 |
33 |
| Schlumberger Canada Limited | 7610 |
28 |
| Cameron International Corporation | 1367 |
26 |
| Baker Hughes Oilfield Operations, LLC | 2555 |
25 |
| Baker Hughes Holdings LLC | 3010 |
23 |
| Petroleo Brasileiro S.A. - Petrobras | 977 |
21 |
| Championx LLC | 653 |
19 |
| Championx USA Inc. | 172 |
18 |
| Baker Hughes Incorporated | 4883 |
16 |
| Ecolab USA Inc. | 5831 |
16 |
| ConocoPhillips Company | 1714 |
15 |
| Dorf Ketal Chemicals FZE | 196 |
14 |
| Baker Hughes, a GE Company, LLC | 2022 |
13 |
| Aramco Services Company | 4190 |
12 |
| M-I L.L.C. | 732 |
10 |
| Services Petroliers Schlumberger | 6022 |
10 |
| Cameron Technologies Limited | 234 |
10 |
| OneSubsea IP UK Limited | 440 |
9 |
| Other owners | 452 |