- All sections
- B - Performing operationstransporting
- B66B - Elevatorsescalators or moving walkways
- B66B 21/04 - Escalators linear type
Patent holdings for IPC class B66B 21/04
Total number of patents in this class: 61
10-year publication summary
|
2
|
8
|
6
|
9
|
12
|
2
|
4
|
4
|
8
|
1
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Otis Elevator Company | 2697 |
29 |
| Inventio AG | 2413 |
8 |
| Kone Oyj | 2161 |
5 |
| Mitsubishi Electric Corporation | 48236 |
3 |
| China University of Mining and Technology | 1316 |
2 |
| TK Elevator Innovation and Operations GmbH | 223 |
2 |
| Toyota Motor Corporation | 35992 |
1 |
| Hitachi, Ltd. | 16183 |
1 |
| Brunswick Corporation | 1494 |
1 |
| L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude | 4122 |
1 |
| Shanghai Hongqu Electronic Technology Co., Ltd. | 16 |
1 |
| Toshiba Elevator Kabushiki Kaisha | 20 |
1 |
| The University of Tokyo | 4380 |
1 |
| KONE Elevator Co., Ltd. | 6 |
1 |
| Siemens Logistics GmbH | 34 |
1 |
| TK Escalator Norte S.A. | 11 |
1 |
| Space Engineering Inc. | 3 |
1 |
| Hanson Lift (Suzhou) Co., Ltd. | 1 |
1 |
| Other owners | 0 |