- All sections
- B - Performing operations; transporting
- B66D - Capstans; winches; tackles, e.g. pulley blocks; hoists
- 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 anchors; Warping 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
|
12
|
14
|
9
|
13
|
23
|
21
|
19
|
22
|
14
|
4
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Schlumberger Technology Corporation | 9690 |
5 |
| Itrec B.V. | 477 |
4 |
| Liebherr-components Biberach GmbH | 223 |
4 |
| Samsung Heavy Ind. Co., Ltd. | 240 |
4 |
| Stimline AS | 26 |
4 |
| Warn Industries, Inc. | 197 |
4 |
| Hall Labs, LLC | 221 |
4 |
| Schlumberger Canada Limited | 6913 |
3 |
| ABB Schweiz AG | 6321 |
3 |
| China University of Mining and Technology | 1189 |
3 |
| Kobelco Construction Machinery Co., Ltd. | 1048 |
3 |
| Parkburn Precision Handling Systems Limited | 11 |
3 |
| Avetics Global Pte Ltd | 3 |
3 |
| Tugpins B.V. | 7 |
3 |
| Infravision Holdings Pty Ltd | 9 |
3 |
| Schlumberger Technology B.v. | 4951 |
2 |
| Schlumberger Holdings Limited | 2947 |
2 |
| Toyota Motor Corporation | 28582 |
2 |
| Caterpillar Inc. | 8877 |
2 |
| Altec Industries, Inc. | 178 |
2 |
| Other owners | 154 |