- 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: 179
10-year publication summary
|
24
|
32
|
21
|
20
|
19
|
16
|
7
|
11
|
10
|
3
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Koito Manufacturing Co., Ltd. | 2467 |
28 |
| Panasonic Intellectual Property Management Co., Ltd. | 34335 |
16 |
| Semiconductor Energy Laboratory Co., Ltd. | 11873 |
14 |
| Kaneka Corporation | 4745 |
11 |
| Sharp Kabushiki Kaisha | 18495 |
7 |
| Nitto Denko Corporation | 8565 |
6 |
| FUJIFILM Corporation | 30628 |
5 |
| Mitsubishi Electric Corporation | 48236 |
5 |
| Sony Corporation | 30097 |
4 |
| Toray Industries, Inc. | 7143 |
4 |
| Japan Display Inc. | 3018 |
4 |
| E.F. Johnson Company | 61 |
4 |
| Ichikoh Industries, Ltd. | 395 |
4 |
| Konica Minolta, Inc. | 9159 |
3 |
| Mitsubishi Electric Lighting Corporation | 49 |
3 |
| Valeo Vision | 1760 |
3 |
| Vyv, Inc. | 36 |
3 |
| Honda Motor Co., Ltd. | 26154 |
2 |
| LG Display Co., Ltd. | 15018 |
2 |
| Merck Patent GmbH | 5739 |
2 |
| Other owners | 49 |