- All sections
- B - Performing operations; transporting
- B66B - Elevators; escalators 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: 14
10-year publication summary
|
1
|
1
|
3
|
2
|
1
|
2
|
2
|
0
|
1
|
0
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| China University of Mining and Technology | 1189 |
3 |
| Otis Elevator Company | 2677 |
2 |
| W2w 777 Operations, LLC | 2 |
2 |
| TK Elevator Corporation | 23 |
2 |
| Mitsubishi Electric Corporation | 43934 |
1 |
| Georgia Tech Research Corporation | 2453 |
1 |
| Bucher Hydraulics AG | 20 |
1 |
| Edge Medical Properties, LLC | 8 |
1 |
| GEA Process Engineering NV | 36 |
1 |
| Other owners | 0 |