- 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 19/14 - Racks, ramps, troughs or bins, for holding the lengths of rod singly or connectedHandling between storage place and borehole
Patent holdings for IPC class E21B 19/14
Total number of patents in this class: 733
10-year publication summary
|
63
|
66
|
58
|
55
|
35
|
51
|
20
|
24
|
28
|
5
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Itrec B.V. | 502 |
53 |
| National Oilwell Varco, L.P. | 1701 |
49 |
| Nabors Drilling Technologies USA, Inc. | 570 |
34 |
| Schlumberger Technology Corporation | 11449 |
29 |
| Sichuan Honghua Petroleum Equipment Co. Ltd. | 76 |
20 |
| Epiroc Rock Drills Aktiebolag | 613 |
17 |
| Forum US, Inc. | 345 |
16 |
| Mhwirth AS | 130 |
16 |
| Nabors Industries, Inc. | 37 |
15 |
| Salunda Limited | 59 |
13 |
| Caterpillar Global Mining Equipment LLC | 173 |
10 |
| Schlumberger Canada Limited | 7544 |
9 |
| Canrig Robotic Technologies AS | 54 |
9 |
| National Oilwell Varco Norway AS | 107 |
8 |
| Sandvik Mining and Construction Oy | 858 |
8 |
| Cameron International Corporation | 1365 |
7 |
| TT Technologies, Inc. | 150 |
7 |
| Vermeer Manufacturing Company | 662 |
7 |
| Maersk Drilling A/S | 46 |
7 |
| Noble Drilling A/S | 52 |
7 |
| Other owners | 392 |