- All sections
- B - Performing operations; transporting
- B66B - Elevators; escalators or moving walkways
- B66B 5/04 - Applications of checking, fault-correcting or safety devices in elevators responsive to abnormal operating conditions for detecting excessive speed
Patent holdings for IPC class B66B 5/04
Total number of patents in this class: 320
10-year publication summary
|
20
|
20
|
30
|
33
|
45
|
38
|
14
|
16
|
7
|
7
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Otis Elevator Company | 2677 |
71 |
| Mitsubishi Electric Corporation | 43934 |
52 |
| Kone Oyj | 2000 |
44 |
| Hitachi, Ltd. | 16452 |
22 |
| Inventio AG | 2314 |
18 |
| MITSUBISHI DENKI KABUSHIKI KAISHA also trading as Mitsubishi Electric Corporation | 1082 |
7 |
| Toshiba Elevator Kabushiki Kaisha | 101 |
6 |
| Wittur Holding GmbH | 99 |
5 |
| thyssenkrupp Elevator Innovation and Operations GmbH | 59 |
5 |
| AIP ApS | 20 |
4 |
| Harmar Mobility, LLC | 23 |
4 |
| Mitsubishi Electric Building Techno-Service Co., Ltd. | 427 |
4 |
| ThyssenKrupp Elevator AG | 217 |
4 |
| ThyssenKrupp Elevator Innovation and Opertions GmbH | 17 |
4 |
| Raxtar B.V. | 9 |
3 |
| Hangzhou Huning Elevator Parts Co., Ltd. | 12 |
3 |
| EXTREMA S.r.l. | 10 |
3 |
| TK Elevator Innovation and Operations GmbH | 158 |
3 |
| Hydro Mobile inc. | 8 |
2 |
| Orona, S. Coop. | 23 |
2 |
| Other owners | 54 |