- All sections
- B - Performing operations; transporting
- B66C - Cranes; load-engaging elements or devices for cranes, capstans, winches, or tackles
- B66C 13/28 - Circuits for controlling the lowering of the load by ac motors utilising regenerative braking for controlling descent of heavy loads and having means for preventing rotation of motor in the hoisting direction when load is released
Patent holdings for IPC class B66C 13/28
Total number of patents in this class: 47
10-year publication summary
|
5
|
6
|
5
|
4
|
2
|
2
|
1
|
5
|
0
|
1
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Konecranes Global Corporation | 484 |
7 |
| Energy Vault, Inc. | 56 |
6 |
| Kobelco Construction Machinery Co., Ltd. | 1048 |
5 |
| Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) | 2865 |
3 |
| Liebherr-components Biberach GmbH | 223 |
3 |
| Kobe Steel, Ltd. | 912 |
2 |
| Mitsui E&S Holdings Co.,Ltd. | 24 |
2 |
| TSUJI HEAVY INDUSTRIES Co., Ltd. | 2 |
2 |
| Eaton Corporation | 1839 |
1 |
| Doosan Infracore Co., Ltd. | 313 |
1 |
| Gottwald Port Technology GmbH | 21 |
1 |
| HYDAC Technology GmbH | 221 |
1 |
| Itrec B.V. | 477 |
1 |
| J.D. Neuhaus Holding GmbH & Co. KG | 12 |
1 |
| Kabushiki Kaisha Yaskawa Denki | 1468 |
1 |
| KITO Corporation | 166 |
1 |
| Liebherr-Verzahntechnik GmbH | 72 |
1 |
| Liebherr-Werk Biberach GmbH | 193 |
1 |
| Paul Vahle GmbH & Co. KG | 58 |
1 |
| Shenzhen Anshun Energy-saving Technology Development Co., Ltd. | 7 |
1 |
| Other owners | 5 |