- All sections
- B - Performing operations; transporting
- B66B - Elevators; escalators or moving walkways
- B66B 1/28 - Control systems with regulation, i.e. with retroactive action, for influencing travelling speed, acceleration, or deceleration electrical
Patent holdings for IPC class B66B 1/28
Total number of patents in this class: 348
10-year publication summary
|
20
|
22
|
40
|
47
|
56
|
46
|
41
|
25
|
9
|
1
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Otis Elevator Company | 2677 |
138 |
| Kone Oyj | 2000 |
66 |
| Inventio AG | 2314 |
27 |
| Mitsubishi Electric Corporation | 43934 |
24 |
| Sky Climber, LLC | 31 |
6 |
| Mitsubishi Electric Research Laboratories, Inc. | 1010 |
5 |
| TK Elevator Innovation and Operations GmbH | 158 |
5 |
| thyssenkrupp Elevator Innovation and Operations GmbH | 59 |
4 |
| Smart Lifts, LLC | 20 |
3 |
| ThyssenKrupp Elevator AG | 217 |
3 |
| Xicore Inc. | 11 |
3 |
| Shenzhen Technology University | 148 |
3 |
| International Business Machines Corporation | 60644 |
2 |
| Hitachi, Ltd. | 16452 |
2 |
| CEDES AG | 79 |
2 |
| Korea Institute of Civil Engineering and Building Technology | 119 |
2 |
| Minnesota Elevator, Inc. | 7 |
2 |
| ThyssenKrupp AG | 3086 |
2 |
| Suzhou Ustar Robot Co., Ltd. | 9 |
2 |
| Canon Inc. | 36841 |
1 |
| Other owners | 46 |