- All sections
- B - Performing operations; transporting
- B66B - Elevators; escalators or moving walkways
- B66B 1/44 - Means for stopping the cars, cages, or skips at predetermined levels and for taking account of disturbance factors, e.g. variation of load weight
Patent holdings for IPC class B66B 1/44
Total number of patents in this class: 37
10-year publication summary
|
2
|
6
|
7
|
11
|
3
|
1
|
6
|
0
|
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 |
12 |
| Mitsubishi Electric Corporation | 43934 |
7 |
| Inventio AG | 2314 |
4 |
| Mitsubishi Electric Building Techno-Service Co., Ltd. | 427 |
2 |
| Kone Oyj | 2000 |
2 |
| TK Elevator Innovation and Operations GmbH | 158 |
2 |
| Daifuku Co., Ltd. | 860 |
1 |
| Smart Lifts, LLC | 20 |
1 |
| ThyssenKrupp AG | 3086 |
1 |
| ThyssenKrupp Elevator AG | 217 |
1 |
| ThyssenKrupp Elevator Capital Corporation | 21 |
1 |
| Arbeit Sicher Pte Ltd | 4 |
1 |
| MITSUBISHI DENKI KABUSHIKI KAISHA also trading as Mitsubishi Electric Corporation | 1082 |
1 |
| Shilat Har-el Systems Ltd. | 2 |
1 |
| Other owners | 0 |