- All sections
- F - Mechanical engineering; lighting; heating; weapons; blasting
- F21S - Non-portable lighting devices; systems thereof; vehicle lighting devices specially adapted for vehicle exteriors
- F21S 4/10 - Lighting devices or systems using a string or strip of light sources with light sources attached to loose electric cables, e.g. Christmas tree lights
Patent holdings for IPC class F21S 4/10
Total number of patents in this class: 383
10-year publication summary
|
27
|
55
|
88
|
75
|
60
|
79
|
61
|
47
|
58
|
4
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Willis Electric Co., Ltd. | 87 |
47 |
| Polygroup Macau Limited (BVI) | 107 |
16 |
| Belgravia Wood Limited | 119 |
15 |
| Zhuhai Bojay Electronics Co., Ltd. | 22 |
12 |
| Blooming International Limited | 21 |
10 |
| Foot-candle, LLC | 10 |
10 |
| Seasons 4 Inc. | 32 |
9 |
| Jiangsu Feitian Lighting Co., Ltd. | 18 |
9 |
| Seasonal Specialties, LLC | 85 |
8 |
| Cosmo Lighting Inc. | 15 |
6 |
| National Christmas Products LLC | 76 |
6 |
| Lamplight Farms Incorporated | 113 |
5 |
| Ledup Manufacturing Group Ltd. | 20 |
5 |
| Gemmy Industries Corporation | 63 |
4 |
| Shangyou Jiayi Lighting Product Co., Ltd. | 23 |
4 |
| Belgravia Wood Limited | 31 |
4 |
| Zhangzhou Go Win Lighting Co., Ltd | 24 |
4 |
| Robert Bosch GmbH | 41717 |
3 |
| Adams Mfg. Corp. | 90 |
3 |
| Shenzhen Guanke Technologies Co., Ltd | 81 |
3 |
| Other owners | 200 |