- All sections
- E - Fixed constructions
- E21B - Earth or rock drilling; obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B 7/14 - Drilling by use of heat, e.g. flame drilling
Patent holdings for IPC class E21B 7/14
Total number of patents in this class: 190
10-year publication summary
|
13
|
14
|
10
|
13
|
12
|
12
|
11
|
20
|
13
|
3
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Saudi Arabian Oil Company | 11322 |
25 |
| Foro Energy, Inc. | 104 |
24 |
| Halliburton Energy Services, Inc. | 20165 |
12 |
| Aramco Services Company | 3504 |
7 |
| Arcbyt, Inc. | 25 |
7 |
| EarthGrid PBC | 21 |
7 |
| SLD Enhanced Recovery, Inc. | 6 |
5 |
| Potter Drilling, Inc. | 7 |
4 |
| Trefimet S.A. | 7 |
4 |
| Off-World, Inc. | 17 |
4 |
| Schlumberger Technology Corporation | 9690 |
3 |
| Chevron U.S.A. Inc. | 3774 |
3 |
| Callidus Capital B.V. | 14 |
3 |
| Gas Technology Institute | 374 |
3 |
| Uniquem Inc. | 22 |
3 |
| GA Drilling, a. s. | 17 |
3 |
| Schlumberger Canada Limited | 6913 |
2 |
| Schlumberger Technology B.v. | 4951 |
2 |
| Baker Hughes Incorporated | 5689 |
2 |
| Massachusetts Institute of Technology | 9795 |
2 |
| Other owners | 65 |