- All sections
- B - Performing operationstransporting
- B66B - Elevatorsescalators or moving walkways
- B66B 23/12 - Steps
Patent holdings for IPC class B66B 23/12
Total number of patents in this class: 122
10-year publication summary
|
9
|
17
|
15
|
11
|
11
|
16
|
2
|
4
|
2
|
0
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Otis Elevator Company | 2658 |
25 |
| Inventio AG | 2359 |
24 |
| Mitsubishi Electric Corporation | 45583 |
16 |
| Mitsubishi Electric Building Techno-Service Co., Ltd. | 423 |
6 |
| China University of Mining and Technology | 1232 |
3 |
| Kone Oyj | 2068 |
3 |
| Hitachi, Ltd. | 15364 |
2 |
| Goldstein Biomedical Consultants LLC | 3 |
2 |
| ThyssenKrupp Elevator AG | 209 |
2 |
| ThyssenKrupp Elevator Innovation Center, S.A. | 36 |
2 |
| Toshiba Elevator Kabushiki Kaisha | 68 |
2 |
| GF Casting Solutions Altenmarkt GmbH & Co. KG | 4 |
2 |
| GF Casting Solutions Herzogenburg Hpdc GmbH | 4 |
2 |
| GF Casting Solutions Suzhou Co. Ltd. | 4 |
2 |
| GF Casting Solutions Wedohl GmbH | 3 |
2 |
| Sekou center TAIYO Ltd. | 2 |
2 |
| thyssenkrupp Elevator Innovation and Operations GmbH | 56 |
2 |
| DAe Ryoon Eles. | 5 |
2 |
| TK Elevator Innovation and Operations GmbH | 168 |
2 |
| Brunswick Corporation | 1327 |
1 |
| Other owners | 18 |