- All sections
- B - Performing operationstransporting
- B66C - Cranesload-engaging elements or devices for cranes, capstans, winches, or tackles
- B66C 23/60 - Derricks
Patent holdings for IPC class B66C 23/60
Total number of patents in this class: 31
10-year publication summary
|
4
|
3
|
3
|
4
|
2
|
6
|
2
|
3
|
2
|
1
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Kobelco Construction Machinery Co., Ltd. | 1080 |
3 |
| Liebherr-Werk Biberach GmbH | 198 |
3 |
| Coastal Cargo Company, LLC | 12 |
2 |
| Drill Rig Spares Pty Ltd | 6 |
2 |
| Forum US, Inc. | 329 |
2 |
| Dalian University of Technology | 1466 |
1 |
| Itrec B.V. | 497 |
1 |
| Liebherr-Werk Ehingen GmbH | 184 |
1 |
| Liebherr-Werk Nenzing GmbH | 90 |
1 |
| Nabors Industries, Inc. | 38 |
1 |
| National Oilwell Varco, L.P. | 1628 |
1 |
| National Oilwell Varco Norway AS | 108 |
1 |
| Oceaneering International, Inc. | 420 |
1 |
| Oz Lifting Products, LLC | 22 |
1 |
| Stimline AS | 27 |
1 |
| Phoenix Services, LLC | 5 |
1 |
| Xuzhou Construction Machinery Group Co., Ltd. | 20 |
1 |
| Nekkar ASA | 14 |
1 |
| China Three Gorges Corporation | 167 |
1 |
| Svitzer Salvage B.V. | 1 |
1 |
| Other owners | 4 |