- All sections
- F - Mechanical engineering; lighting; heating; weapons; blasting
- F21K - Non-electric light sources using luminescence; light sources using electrochemiluminescence; light sources using charges of combustible material; light sources using semiconductor devices as light-generating elements; light sources not otherwise provided for
- F21K 9/275 - Retrofit light sources for lighting devices with two fittings for each light source, e.g. for substitution of fluorescent tubes - Details of bases or housings, i.e. the parts between the light-generating element and the end caps; Arrangement of components within bases or housings
Patent holdings for IPC class F21K 9/275
Total number of patents in this class: 243
10-year publication summary
4
|
19
|
71
|
60
|
58
|
45
|
30
|
12
|
14
|
7
|
2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
Owner |
All patents
|
This class
|
---|---|---|
Jiaxing Super Lighting Electric Appliance Co., Ltd | 364 |
67 |
LEDVANCE GmbH | 564 |
11 |
Orion Energy Systems, Inc. | 67 |
10 |
Signify Holding B.V. | 6837 |
9 |
DVA Holdings LLC | 37 |
9 |
DVA Mayday Corporation, DBA Deltavation | 31 |
7 |
Xiamen Eco Lighting Co. Ltd. | 288 |
7 |
Samsung Electronics Co., Ltd. | 131630 |
6 |
Xiamen PVTECH Co., Ltd. | 84 |
6 |
Bridgelux, Inc. | 351 |
5 |
LED Smart Inc. | 34 |
5 |
Ledvance LLC | 336 |
5 |
Ideal Industries Lighting LLC | 1168 |
5 |
ABL IP Holding LLC | 1929 |
4 |
Feit Electric Company, Inc. | 237 |
4 |
Keystone Technologies, LLC | 10 |
4 |
Epistar Corporation | 1553 |
3 |
Hubbell Lighting, Inc | 673 |
3 |
DMF, Inc. | 119 |
2 |
Energy Focus, Inc. | 76 |
2 |
Other owners | 69 |