- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- F21V - Functional features or details of lighting devices or systems thereofstructural combinations of lighting devices with other articles, not otherwise provided for
- F21V 9/20 - Dichroic filters, i.e. devices operating on the principle of wave interference to pass specific ranges of wavelengths while cancelling others
Patent holdings for IPC class F21V 9/20
Total number of patents in this class: 107
10-year publication summary
|
1
|
4
|
16
|
14
|
15
|
12
|
11
|
16
|
15
|
5
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Signify Holding B.V. | 7770 |
17 |
| Panasonic Intellectual Property Management Co., Ltd. | 32904 |
7 |
| ROBE Lighting s.r.o. | 139 |
6 |
| Sony Group Corporation | 14843 |
5 |
| Sony Corporation | 30634 |
4 |
| Kyocera Corporation | 14158 |
3 |
| Ichikoh Industries, Ltd. | 373 |
3 |
| Olympus Corporation | 13054 |
2 |
| Dai Nippon Printing Co., Ltd. | 4169 |
2 |
| Nichia Corporation | 3791 |
2 |
| Appotronics Corporation Limited | 1122 |
2 |
| Coelux S.r.l. | 94 |
2 |
| Koito Manufacturing Co., Ltd. | 2350 |
2 |
| Qisda Corporation | 496 |
2 |
| Shoei Chemical Inc. | 329 |
2 |
| Stanley Electric Co., Ltd. | 1322 |
2 |
| DWP Energy Solutions, LLC | 4 |
2 |
| Sharp Kabushiki Kaisha | 18616 |
2 |
| Lumileds Singapore Pte. Ltd. | 1263 |
2 |
| 3m Innovative Properties Company | 17614 |
1 |
| Other owners | 37 |