- All sections
- E - Fixed constructions
- E05B - Locksaccessories thereforhandcuffs
- E05B 37/20 - Puzzle locks
Patent holdings for IPC class E05B 37/20
Total number of patents in this class: 27
10-year publication summary
|
8
|
4
|
7
|
1
|
2
|
0
|
2
|
1
|
1
|
0
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Yifeng Manufacturing Co., Ltd. | 19 |
10 |
| Dorel Juvenile Group, Inc. | 316 |
2 |
| Shanghai Shengxiang Science and Technology Co., Ltd. | 12 |
2 |
| Xiamen Make Security Technology Co., Ltd. | 48 |
2 |
| Delta Electronics, Inc. | 2596 |
1 |
| Emtek Products, Inc. | 11 |
1 |
| Mighton Products Limited | 37 |
1 |
| Nanjing Easthouse Electrical Co., Ltd | 70 |
1 |
| Anhui Cowarobot Co., Ltd | 17 |
1 |
| Guangzhou Kingsons Leather Products Co., Ltd | 5 |
1 |
| Lantrn Limited | 1 |
1 |
| Shanghai Chyra International Trading Co., Ltd | 1 |
1 |
| Shen Zhen City Gongyi Technology Co., Ltd | 3 |
1 |
| Shenzhen Lanyang Technology Co., Ltd. | 14 |
1 |
| Wenzhou Jinjian Intelligent Lock Co. , Ltd. | 3 |
1 |
| Other owners | 0 |