- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- F21K - Non-electric light sources using luminescencelight sources using electrochemiluminescencelight sources using charges of combustible materiallight sources using semiconductor devices as light-generating elementslight sources not otherwise provided for
- F21K 9/69 - Details of refractors forming part of the light source
Patent holdings for IPC class F21K 9/69
Total number of patents in this class: 457
10-year publication summary
|
55
|
48
|
60
|
64
|
60
|
38
|
32
|
38
|
45
|
28
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Signify Holding B.V. | 8244 |
21 |
| LG Innotek Co., Ltd. | 8652 |
20 |
| Ennostar Corporation | 1591 |
14 |
| Musco Corporation | 288 |
13 |
| Optovate Limited | 36 |
12 |
| Lutron Technology Company LLC | 2788 |
11 |
| Opple Lighting Co., Ltd. | 940 |
10 |
| ABL IP Holding LLC | 1883 |
9 |
| Xiamen Eco Lighting Co. Ltd. | 282 |
9 |
| Nichia Corporation | 3914 |
8 |
| Seoul Semiconductor Co., Ltd. | 1049 |
8 |
| Seoul Viosys Co., Ltd. | 1573 |
8 |
| Samsung Electronics Co., Ltd. | 159755 |
7 |
| Bridgelux, Inc. | 359 |
6 |
| Elemental LED, Inc. | 188 |
5 |
| LEDVANCE GmbH | 589 |
5 |
| Schreder | 45 |
5 |
| Suzhou Opple Lighting Co., Ltd. | 706 |
5 |
| Lumileds Singapore Pte. Ltd. | 1268 |
5 |
| Enplas Corporation | 892 |
4 |
| Other owners | 272 |