- All sections
- B - Performing operations; transporting
- B66B - Elevators; escalators or moving walkways
- B66B 21/02 - Escalators
Patent holdings for IPC class B66B 21/02
Total number of patents in this class: 83
10-year publication summary
|
9
|
12
|
8
|
22
|
10
|
6
|
8
|
6
|
1
|
1
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Otis Elevator Company | 2677 |
28 |
| Inventio AG | 2314 |
15 |
| Kone Oyj | 2000 |
14 |
| Mitsubishi Electric Corporation | 43934 |
4 |
| Toshiba Elevator Kabushiki Kaisha | 101 |
3 |
| Kone Elevators Co., Ltd. | 28 |
3 |
| RWM Technologies, LLC | 2 |
2 |
| ThyssenKrupp Elevator Innovation Center, S.A. | 40 |
2 |
| KONE Elevator Co., Ltd. | 8 |
2 |
| China University of Mining and Technology | 1189 |
1 |
| Fujitec America, Inc. | 4 |
1 |
| Vanderburgh, Matthew | 1 |
1 |
| SJEC Corporation | 9 |
1 |
| Kerett Electronic Services Ltd | 3 |
1 |
| Suzhou Shenlong Elevator Co., Ltd | 2 |
1 |
| Climber O.d.e Ltd | 3 |
1 |
| TK Escalator Norte S.A. | 6 |
1 |
| Otis Elevator Management (Shanghai) Co., Ltd. | 1 |
1 |
| Taesung Escalator Co., Ltd. | 1 |
1 |
| Other owners | 0 |