- 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 4/15 - 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 the cables forming a grid, net or web structure
Patent holdings for IPC class F21S 4/15
Total number of patents in this class: 48
10-year publication summary
|
4
|
4
|
11
|
14
|
7
|
11
|
7
|
9
|
5
|
3
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Willis Electric Co., Ltd. | 91 |
20 |
| Shangyou Jiayi Lighting Product Co., Ltd. | 16 |
3 |
| Massachusetts Institute of Technology | 9795 |
2 |
| Polygroup Macau Limited (BVI) | 122 |
2 |
| Zhu Hai Fu Yun Lighting Industrial Co., Ltd. | 8 |
2 |
| Signify Holding B.V. | 6837 |
2 |
| Zhuhai Bojay Electronics Co., Ltd. | 22 |
2 |
| Ledup Manufacturing Group Ltd. | 15 |
2 |
| OSRAM Opto Semiconductors GmbH | 3390 |
1 |
| OSRAM OLED GmbH | 1841 |
1 |
| Seasons 4 Inc. | 32 |
1 |
| Wintergreen Corporation | 19 |
1 |
| Zydex Pty Ltd | 28 |
1 |
| 4B DREAM Co., Ltd. | 4 |
1 |
| Fresh Source International Inc. | 14 |
1 |
| Nicaud Companies 22 (Pty) Ltd. | 3 |
1 |
| Curb Media Limited | 1 |
1 |
| Jiangsu Ledco Lighting Tech Co., Ltd. | 12 |
1 |
| Shenzhen Ekola Lighiing Technology Co., Ltd. | 1 |
1 |
| Shenzhen Ekola Lighting Technology Co., Ltd. | 8 |
1 |
| Other owners | 1 |