- All sections
- B - Performing operations; transporting
- B66B - Elevators; escalators or moving walkways
- B66B 5/22 - Braking or catch devices operating between cars, cages, or skips and fixed guide elements or surfaces in hoistway or well and applying frictional retarding forces by means of linearly-movable wedges
Patent holdings for IPC class B66B 5/22
Total number of patents in this class: 217
10-year publication summary
|
14
|
11
|
22
|
24
|
21
|
26
|
14
|
20
|
24
|
3
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Otis Elevator Company | 2677 |
63 |
| Inventio AG | 2314 |
29 |
| Mitsubishi Electric Corporation | 43934 |
28 |
| Hitachi, Ltd. | 16452 |
25 |
| Kone Oyj | 2000 |
9 |
| MITSUBISHI DENKI KABUSHIKI KAISHA also trading as Mitsubishi Electric Corporation | 1082 |
6 |
| FLSmidth A/S | 923 |
5 |
| ThyssenKrupp Elevator AG | 217 |
4 |
| China University of Mining and Technology | 1189 |
3 |
| ThyssenKrupp AG | 3086 |
3 |
| thyssenkrupp Elevator Innovation and Operations GmbH | 59 |
3 |
| ThyssenKrupp Elevator Innovation and Opertions GmbH | 17 |
3 |
| Dongnan Elevator Co., Ltd. | 25 |
2 |
| Wittur AG | 6 |
2 |
| Wittur Holding GmbH | 99 |
2 |
| Wurtec, Incorporated | 16 |
2 |
| Hangzhou Huning Elevator Parts Co., Ltd. | 12 |
2 |
| Dynatech, Dynamics & Technology, S.L. | 9 |
2 |
| TK Elevator Innovation and Operations GmbH | 158 |
2 |
| ABB Schweiz AG | 6321 |
1 |
| Other owners | 21 |