- All sections
- B - Performing operationstransporting
- B66B - Elevatorsescalators 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: 311
10-year publication summary
20
|
30
|
33
|
42
|
36
|
14
|
16
|
7
|
15
|
9
|
2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
Owner |
All patents
|
This class
|
---|---|---|
Otis Elevator Company | 2652 |
73 |
Mitsubishi Electric Corporation | 46547 |
51 |
Kone Oyj | 2097 |
45 |
Hitachi, Ltd. | 15588 |
24 |
Inventio AG | 2387 |
18 |
Wittur Holding GmbH | 122 |
8 |
TK Elevator Innovation and Operations GmbH | 194 |
7 |
AIP ApS | 20 |
4 |
Harmar Mobility, LLC | 22 |
4 |
Mitsubishi Electric Building Techno-Service Co., Ltd. | 419 |
4 |
ThyssenKrupp Elevator AG | 209 |
4 |
Raxtar B.V. | 9 |
3 |
Hangzhou Huning Elevator Parts Co., Ltd. | 12 |
3 |
EXTREMA S.r.l. | 7 |
3 |
Mitsubishi Electric Building Solutions Corporation | 366 |
3 |
Hydro Mobile inc. | 8 |
2 |
Sabanci Universitesi | 125 |
2 |
Stannah Stairlifts Limited | 84 |
2 |
ThyssenKrupp AG | 3311 |
2 |
Wurtec, Incorporated | 20 |
2 |
Other owners | 47 |