- All sections
- B - Performing operationstransporting
- B66B - Elevatorsescalators 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: 38
10-year publication summary
|
6
|
7
|
11
|
3
|
1
|
7
|
0
|
1
|
2
|
0
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Otis Elevator Company | 2666 |
14 |
| Mitsubishi Electric Corporation | 45946 |
7 |
| Inventio AG | 2382 |
3 |
| Kone Oyj | 2082 |
3 |
| Mitsubishi Electric Building Techno-Service Co., Ltd. | 419 |
2 |
| Daifuku Co., Ltd. | 981 |
1 |
| Smart Lifts, LLC | 20 |
1 |
| ThyssenKrupp AG | 3276 |
1 |
| ThyssenKrupp Elevator AG | 209 |
1 |
| ThyssenKrupp Elevator Capital Corporation | 19 |
1 |
| Arbeit Sicher Pte Ltd | 4 |
1 |
| MITSUBISHI DENKI KABUSHIKI KAISHA also trading as Mitsubishi Electric Corporation | 347 |
1 |
| TK Elevator Innovation and Operations GmbH | 192 |
1 |
| Shilat Har-el Systems Ltd. | 2 |
1 |
| Other owners | 0 |