- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- F21Y - Indexing scheme associated with subclasses , , and , relating to the form or the kind of the light sources or of the colour of the light emitted
- F21Y 115/20 - Electroluminescent [EL] light sources
Patent holdings for IPC class F21Y 115/20
Total number of patents in this class: 172
10-year publication summary
|
23
|
24
|
32
|
21
|
20
|
19
|
16
|
7
|
11
|
6
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Koito Manufacturing Co., Ltd. | 2246 |
28 |
| Panasonic Intellectual Property Management Co., Ltd. | 31515 |
16 |
| Semiconductor Energy Laboratory Co., Ltd. | 11416 |
13 |
| Kaneka Corporation | 4529 |
10 |
| Sharp Kabushiki Kaisha | 18738 |
7 |
| FUJIFILM Corporation | 29424 |
5 |
| Mitsubishi Electric Corporation | 46160 |
5 |
| Nitto Denko Corporation | 8246 |
5 |
| Sony Corporation | 31028 |
4 |
| Japan Display Inc. | 6961 |
4 |
| E.F. Johnson Company | 64 |
4 |
| Konica Minolta, Inc. | 8751 |
3 |
| Toray Industries, Inc. | 6951 |
3 |
| Ichikoh Industries, Ltd. | 348 |
3 |
| Mitsubishi Electric Lighting Corporation | 49 |
3 |
| Vyv, Inc. | 35 |
3 |
| Honda Motor Co., Ltd. | 25301 |
2 |
| LG Display Co., Ltd. | 13533 |
2 |
| Merck Patent GmbH | 5818 |
2 |
| Pioneer Corporation | 4342 |
2 |
| Other owners | 48 |