- 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 45/00 - Measuring the drilling time or rate of penetration
Patent holdings for IPC class E21B 45/00
Total number of patents in this class: 476
10-year publication summary
|
27
|
21
|
31
|
50
|
39
|
50
|
30
|
38
|
25
|
27
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Halliburton Energy Services, Inc. | 20964 |
61 |
| Schlumberger Technology Corporation | 10898 |
53 |
| Saudi Arabian Oil Company | 13409 |
39 |
| Motive Drilling Technologies, Inc. | 103 |
30 |
| Landmark Graphics Corporation | 1524 |
25 |
| ExxonMobil Upstream Research Company | 2390 |
16 |
| Baker Hughes Incorporated | 5246 |
13 |
| Pason Systems Corp. | 82 |
10 |
| Nabors Drilling Technologies USA, Inc. | 562 |
9 |
| National Oilwell Varco, L.P. | 1689 |
8 |
| Baker Hughes, a GE Company, LLC | 2109 |
8 |
| Schlumberger Canada Limited | 7369 |
6 |
| Aramco Services Company | 4033 |
6 |
| Technological Resources Pty. Limited | 458 |
6 |
| Schlumberger Technology B.v. | 5184 |
5 |
| Board of Regents, The University of Texas System | 5869 |
5 |
| Merlin Technology, Inc. | 162 |
5 |
| Services Petroliers Schlumberger | 5830 |
5 |
| Baker Hughes Holdings LLC | 2999 |
5 |
| Shell USA, Inc. | 1242 |
5 |
| Other owners | 156 |