- All sections
- B - Performing operationstransporting
- B66D - Capstanswinchestackles, e.g. pulley blockshoists
- B66D 1/50 - Control devices automatic for maintaining predetermined rope, cable, or chain tension, e.g. in ropes or cables for towing craft, in chains for anchorsWarping or mooring winch-cable tension control
Patent holdings for IPC class B66D 1/50
Total number of patents in this class: 217
10-year publication summary
|
13
|
8
|
11
|
21
|
20
|
17
|
19
|
12
|
8
|
7
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Schlumberger Technology Corporation | 10848 |
5 |
| Itrec B.V. | 503 |
4 |
| Liebherr-components Biberach GmbH | 225 |
4 |
| Samsung Heavy Ind. Co., Ltd. | 237 |
4 |
| Stimline AS | 26 |
4 |
| Warn Industries, Inc. | 204 |
4 |
| Schlumberger Canada Limited | 7357 |
3 |
| ABB Schweiz AG | 7023 |
3 |
| China University of Mining and Technology | 1260 |
3 |
| Kobelco Construction Machinery Co., Ltd. | 1146 |
3 |
| Parkburn Precision Handling Systems Limited | 9 |
3 |
| Infravision Holdings Pty Ltd | 11 |
3 |
| Schlumberger Technology B.v. | 5184 |
2 |
| Schlumberger Holdings Limited | 2808 |
2 |
| Toyota Motor Corporation | 32681 |
2 |
| Caterpillar Inc. | 9604 |
2 |
| Altec Industries, Inc. | 208 |
2 |
| C6 Technologies AS | 33 |
2 |
| Conductix Wampfler France | 45 |
2 |
| Electronic Power Design, Inc. | 37 |
2 |
| Other owners | 158 |