- All sections
- B - Performing operations; transporting
- B66B - Elevators; escalators or moving walkways
- B66B 23/20 - Means allowing tensioning of the endless member for handrails
Patent holdings for IPC class B66B 23/20
Total number of patents in this class: 24
10-year publication summary
|
1
|
1
|
1
|
3
|
3
|
7
|
1
|
3
|
1
|
0
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Otis Elevator Company | 2677 |
6 |
| Inventio AG | 2314 |
5 |
| Kone Oyj | 2000 |
4 |
| Innova Patent GmbH | 243 |
3 |
| KONE Elevator Co., Ltd. | 8 |
2 |
| Hanson Lift (Suzhou) Co., Ltd. | 8 |
2 |
| Mitsubishi Electric Corporation | 43934 |
1 |
| SJEC Corporation | 9 |
1 |
| Other owners | 0 |