- All sections
- F - Mechanical engineering; lighting; heating; weapons; blasting
- F21W - Indexing scheme associated with subclasses , , and , relating to uses or applications of lighting devices or systems
- F21W 121/04 - Use or application of lighting devices or systems for decorative purposes, not provided for in groups for Christmas trees
Patent holdings for IPC class F21W 121/04
Total number of patents in this class: 128
10-year publication summary
|
12
|
20
|
20
|
20
|
23
|
25
|
18
|
6
|
10
|
2
|
| 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 |
39 |
| Polygroup Macau Limited (BVI) | 107 |
16 |
| Belgravia Wood Limited | 119 |
15 |
| Seasonal Specialties, LLC | 85 |
11 |
| National Christmas Products LLC | 76 |
9 |
| Belgravia Wood Limited | 31 |
5 |
| Seasons 4 Inc. | 32 |
3 |
| Ledup Manufacturing Group Ltd. | 20 |
3 |
| Cosmo Lighting Inc. | 15 |
2 |
| Ulta-lit Tree Co. | 22 |
2 |
| Martinez, Stephanie | 7 |
2 |
| 1 Energy Solutions, Inc. | 8 |
1 |
| Alpine Corporation | 54 |
1 |
| Dianqing, Zheng | 1 |
1 |
| Evergreen Tree Limited | 5 |
1 |
| Fujimiyaseisakusho Co., Ltd. | 13 |
1 |
| Greenfields Christmas Tree Manufactory | 1 |
1 |
| Hemsson Holding B.V. | 9 |
1 |
| Loominocity, Inc. | 8 |
1 |
| Wintergreen Corporation | 25 |
1 |
| Other owners | 12 |