- 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: 741
10-year publication summary
|
76
|
77
|
66
|
66
|
39
|
63
|
24
|
29
|
33
|
12
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Itrec B.V. | 505 |
53 |
| National Oilwell Varco, L.P. | 1690 |
49 |
| Nabors Drilling Technologies USA, Inc. | 575 |
36 |
| Schlumberger Technology Corporation | 11584 |
30 |
| Sichuan Honghua Petroleum Equipment Co. Ltd. | 76 |
20 |
| Mhwirth AS | 131 |
17 |
| Epiroc Rock Drills Aktiebolag | 635 |
17 |
| Forum US, Inc. | 345 |
16 |
| Nabors Industries, Inc. | 37 |
15 |
| Salunda Limited | 66 |
13 |
| Schlumberger Canada Limited | 7588 |
10 |
| Caterpillar Global Mining Equipment LLC | 174 |
10 |
| Canrig Robotic Technologies AS | 54 |
9 |
| National Oilwell Varco Norway AS | 107 |
8 |
| Sandvik Mining and Construction Oy | 875 |
8 |
| Schlumberger Technology B.v. | 5282 |
7 |
| Cameron International Corporation | 1367 |
7 |
| Services Petroliers Schlumberger | 5996 |
7 |
| TT Technologies, Inc. | 152 |
7 |
| Vermeer Manufacturing Company | 667 |
7 |
| Other owners | 395 |