- All sections
- B - Performing operationstransporting
- B66B - Elevatorsescalators or moving walkways
- B66B 1/50 - Adaptations of switches or switchgear with operating or control mechanisms mounted in the car or cage or in the lift well or hoistway
Patent holdings for IPC class B66B 1/50
Total number of patents in this class: 72
10-year publication summary
|
2
|
2
|
8
|
9
|
8
|
10
|
10
|
6
|
8
|
1
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Otis Elevator Company | 2658 |
17 |
| Mitsubishi Electric Corporation | 45583 |
11 |
| Inventio AG | 2359 |
11 |
| Hitachi, Ltd. | 15364 |
8 |
| Kone Oyj | 2068 |
5 |
| Mitsubishi Electric Building Solutions Corporation | 328 |
3 |
| Mitsubishi Electric Building Techno-Service Co., Ltd. | 423 |
2 |
| MITSUBISHI DENKI KABUSHIKI KAISHA also trading as Mitsubishi Electric Corporation | 406 |
2 |
| Jiangsu Welm Technology Co., Ltd | 18 |
2 |
| TK Elevator Innovation and Operations GmbH | 168 |
2 |
| Designed Access LLC | 3 |
2 |
| Avanti Wind Systems, Inc. | 1 |
1 |
| Hitachi Building Systems Co., Ltd. | 51 |
1 |
| Lsis Co., Ltd. | 817 |
1 |
| Japan Elevator Service Holdings Co., Ltd. | 48 |
1 |
| Hai'an County Shenling Electrical Appliance Manufacture Co., Ltd | 7 |
1 |
| MWS Fabrication, Inc. | 3 |
1 |
| TK Elevator Corporation | 22 |
1 |
| Other owners | 0 |