- All sections
- B - Performing operationstransporting
- B66B - Elevatorsescalators or moving walkways
- B66B 13/28 - Safety devices in passenger lifts, not otherwise provided for, for preventing trapping of passengers between car or cage and wells
Patent holdings for IPC class B66B 13/28
Total number of patents in this class: 56
10-year publication summary
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2
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4
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6
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8
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8
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6
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3
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3
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5
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2
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| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Otis Elevator Company | 2695 |
14 |
| Kone Oyj | 2148 |
9 |
| Mitsubishi Electric Corporation | 47893 |
7 |
| Inventio AG | 2403 |
7 |
| Hitachi, Ltd. | 16031 |
3 |
| VIP Lift & Escalator Services Limited | 2 |
2 |
| DAe Ryoon Eles. | 5 |
2 |
| China University of Mining and Technology | 1305 |
1 |
| Dongnan Elevator Co., Ltd. | 25 |
1 |
| Mitsubishi Electric Building Techno-Service Co., Ltd. | 414 |
1 |
| Toshiba Elevator Kabushiki Kaisha | 22 |
1 |
| Nova S.r.l. | 9 |
1 |
| Thomsen, Christian E. | 6 |
1 |
| Societe Lyonnaise de Construction de Materiel D'ascenseur - Slycma | 1 |
1 |
| Stiltz Limited | 6 |
1 |
| thyssenkrupp Elevator Innovation and Operations GmbH | 36 |
1 |
| TK Elevator Innovation and Operations GmbH | 219 |
1 |
| Mitsubishi Electric Building Solutions Corporation | 406 |
1 |
| Ashby Elevator Safety Products, LLC | 2 |
1 |
| Other owners | 0 |