- 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: 12
10-year publication summary
|
3
|
2
|
1
|
2
|
2
|
0
|
1
|
0
|
1
|
0
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| China University of Mining and Technology | 1316 |
2 |
| Otis Elevator Company | 2697 |
2 |
| TK Elevator Corporation | 32 |
2 |
| Mitsubishi Electric Corporation | 48236 |
1 |
| Georgia Tech Research Corporation | 2964 |
1 |
| Bucher Hydraulics AG | 32 |
1 |
| GEA Process Engineering NV | 46 |
1 |
| W2w 777 Operations, LLC | 1 |
1 |
| Hydrasafe Brake, LLC | 5 |
1 |
| Other owners | 0 |