- All sections
- B - Performing operations; transporting
- B66B - Elevators; escalators 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: 145
10-year publication summary
|
3
|
7
|
10
|
19
|
14
|
22
|
15
|
5
|
8
|
3
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Otis Elevator Company | 2677 |
33 |
| Mitsubishi Electric Corporation | 43934 |
25 |
| Kone Oyj | 2000 |
16 |
| Inventio AG | 2314 |
9 |
| China University of Mining and Technology | 1189 |
5 |
| Olko-maschinentechnik GmbH | 19 |
3 |
| Liin Technologies Incorporated | 4 |
3 |
| Space Liintech Co., Ltd. | 4 |
3 |
| Dongnan Elevator Co., Ltd. | 25 |
2 |
| Hyundai Elevator Co., Ltd. | 26 |
2 |
| TGW Mechanics GmbH | 129 |
2 |
| ThyssenKrupp Elevator AG | 217 |
2 |
| Xuzhou Zhirun Mining Equipment Science and Technology Co., Ltd. | 31 |
2 |
| MITSUBISHI DENKI KABUSHIKI KAISHA also trading as Mitsubishi Electric Corporation | 1082 |
2 |
| Inner Mongolia University of Technology | 34 |
2 |
| DAe Ryoon Eles. | 5 |
2 |
| Offshore Technology Partner AS | 2 |
1 |
| Orona, S. Coop. | 23 |
1 |
| Poma | 100 |
1 |
| SEW-EURODRIVE GmbH & Co. KG | 1816 |
1 |
| Other owners | 28 |