- All sections
- B - Performing operations; transporting
- B66B - Elevators; escalators or moving walkways
- B66B 23/24 - Handrails
Patent holdings for IPC class B66B 23/24
Total number of patents in this class: 139
10-year publication summary
|
10
|
6
|
10
|
10
|
13
|
6
|
12
|
14
|
4
|
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 |
30 |
| Mitsubishi Electric Corporation | 43934 |
27 |
| EHC Canada, Inc. | 32 |
16 |
| Inventio AG | 2314 |
12 |
| Semperit AG Holding | 30 |
11 |
| Innova Patent GmbH | 243 |
4 |
| Semperit Aktiengesellschaft Holding | 21 |
4 |
| Kone Oyj | 2000 |
4 |
| MITSUBISHI DENKI KABUSHIKI KAISHA also trading as Mitsubishi Electric Corporation | 1082 |
3 |
| AD Corporation Limited | 3 |
3 |
| Hitachi, Ltd. | 16452 |
2 |
| Denki Kagaku Kogyo Kabushiki Kaisha | 680 |
2 |
| Mitsubishi Electric Building Techno-Service Co., Ltd. | 427 |
2 |
| Tokan Co., Ltd. | 3 |
2 |
| Toshiba Elevator Kabushiki Kaisha | 101 |
2 |
| Sookyoung A.i.d. Co., Ltd. | 2 |
2 |
| NEC Corporation | 32703 |
1 |
| Brad Koering | 1 |
1 |
| Daicel Chemical Industries, Ltd. | 288 |
1 |
| East Japan Railway Company | 60 |
1 |
| Other owners | 9 |