- All sections
- B - Performing operationstransporting
- B66B - Elevatorsescalators or moving walkways
- B66B 1/04 - Control systems without regulation, i.e. without retroactive action hydraulic
Patent holdings for IPC class B66B 1/04
Total number of patents in this class: 13
10-year publication summary
|
1
|
2
|
2
|
1
|
2
|
2
|
0
|
1
|
0
|
0
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| China University of Mining and Technology | 1266 |
3 |
| Otis Elevator Company | 2652 |
2 |
| TK Elevator Corporation | 23 |
2 |
| Mitsubishi Electric Corporation | 46590 |
1 |
| Georgia Tech Research Corporation | 2775 |
1 |
| Bucher Hydraulics AG | 20 |
1 |
| GEA Process Engineering NV | 41 |
1 |
| W2w 777 Operations, LLC | 1 |
1 |
| Hydrasafe Brake, LLC | 5 |
1 |
| Other owners | 0 |