- 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: 459
10-year publication summary
|
34
|
25
|
36
|
56
|
43
|
58
|
29
|
38
|
25
|
16
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Halliburton Energy Services, Inc. | 20749 |
60 |
| Schlumberger Technology Corporation | 10627 |
51 |
| Saudi Arabian Oil Company | 12858 |
35 |
| Motive Drilling Technologies, Inc. | 102 |
30 |
| Landmark Graphics Corporation | 1522 |
25 |
| ExxonMobil Upstream Research Company | 2411 |
16 |
| Baker Hughes Incorporated | 5289 |
14 |
| globalTech Corporation Pty Ltd | 53 |
9 |
| Nabors Drilling Technologies USA, Inc. | 555 |
8 |
| National Oilwell Varco, L.P. | 1646 |
8 |
| Pason Systems Corp. | 77 |
8 |
| Baker Hughes, a GE Company, LLC | 2115 |
8 |
| Schlumberger Canada Limited | 7235 |
6 |
| Aramco Services Company | 3910 |
6 |
| Technological Resources Pty. Limited | 451 |
6 |
| Schlumberger Technology B.v. | 5148 |
5 |
| Board of Regents, The University of Texas System | 5751 |
5 |
| Merlin Technology, Inc. | 161 |
5 |
| Services Petroliers Schlumberger | 5756 |
5 |
| Baker Hughes Holdings LLC | 3007 |
5 |
| Other owners | 144 |