- All sections
- B - Performing operationstransporting
- B66B - Elevatorsescalators 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
|
21
|
38
|
47
|
57
|
47
|
42
|
26
|
9
|
11
|
12
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Otis Elevator Company | 2653 |
131 |
| Kone Oyj | 2097 |
68 |
| Mitsubishi Electric Corporation | 46618 |
27 |
| Inventio AG | 2389 |
25 |
| Mitsubishi Electric Research Laboratories, Inc. | 1081 |
6 |
| Sky Climber, LLC | 28 |
6 |
| TK Elevator Innovation and Operations GmbH | 196 |
5 |
| Smart Lifts, LLC | 20 |
3 |
| Xicore Inc. | 13 |
3 |
| thyssenkrupp Elevator Innovation and Operations GmbH | 37 |
3 |
| Appana Industries LLC | 21 |
3 |
| Hitachi, Ltd. | 15605 |
2 |
| CEDES AG | 86 |
2 |
| Dongnan Elevator Co., Ltd. | 25 |
2 |
| Korea Institute of Civil Engineering and Building Technology | 134 |
2 |
| Minnesota Elevator, Inc. | 8 |
2 |
| SafeWorks, LLC | 85 |
2 |
| ThyssenKrupp AG | 3317 |
2 |
| ThyssenKrupp Elevator AG | 209 |
2 |
| Shenzhen Technology University | 179 |
2 |
| Other owners | 50 |