- All sections
- B - Performing operationstransporting
- B66B - Elevatorsescalators or moving walkways
- B66B 5/28 - Buffer-stops for cars, cages, or skips
Patent holdings for IPC class B66B 5/28
Total number of patents in this class: 142
10-year publication summary
|
7
|
10
|
18
|
14
|
20
|
15
|
5
|
8
|
5
|
2
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Otis Elevator Company | 2657 |
29 |
| Mitsubishi Electric Corporation | 46295 |
25 |
| Kone Oyj | 2088 |
15 |
| Inventio AG | 2384 |
10 |
| China University of Mining and Technology | 1259 |
5 |
| Olko-maschinentechnik GmbH | 19 |
3 |
| Liin Technologies Incorporated | 6 |
3 |
| Space Liintech Co., Ltd. | 4 |
3 |
| Hitachi, Ltd. | 15531 |
2 |
| Dongnan Elevator Co., Ltd. | 25 |
2 |
| Hyundai Elevator Co., Ltd. | 57 |
2 |
| ThyssenKrupp Elevator AG | 209 |
2 |
| Liftup A/S | 19 |
2 |
| Xuzhou Zhirun Mining Equipment Science and Technology Co., Ltd. | 31 |
2 |
| Inner Mongolia University of Technology | 66 |
2 |
| DAe Ryoon Eles. | 5 |
2 |
| Offshore Technology Partner AS | 2 |
1 |
| Orona, S. Coop. | 18 |
1 |
| Poma | 113 |
1 |
| SEW-EURODRIVE GmbH & Co. KG | 1962 |
1 |
| Other owners | 29 |