- 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 9/61 - Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction using light guides
Patent holdings for IPC class F21K 9/61
Total number of patents in this class: 447
10-year publication summary
27
|
41
|
76
|
79
|
75
|
64
|
46
|
46
|
25
|
5
|
2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
Owner |
All patents
|
This class
|
---|---|---|
Signify Holding B.V. | 6837 |
52 |
Ideal Industries Lighting LLC | 1168 |
25 |
Zhejiang Super Lighting Electric Appliance Co., Ltd. | 52 |
22 |
LG Innotek Co., Ltd. | 6758 |
21 |
Quarkstar LLC | 215 |
21 |
Lumileds LLC | 1827 |
16 |
Axis Lighting Inc. | 98 |
7 |
Flex Lighting II, LLC | 46 |
7 |
Omachron Intellectual Property Inc. | 869 |
7 |
Philips Lighting Holding B.V. | 1437 |
7 |
Samsung Electronics Co., Ltd. | 131630 |
6 |
Nichia Corporation | 3394 |
6 |
ABL IP Holding LLC | 1929 |
6 |
Lumencor, Inc. | 107 |
6 |
Panasonic Intellectual Property Management Co., Ltd. | 27812 |
5 |
Epistar Corporation | 1553 |
4 |
Google LLC | 38759 |
4 |
Luminii LLC | 48 |
4 |
3m Innovative Properties Company | 18406 |
3 |
Sony Corporation | 32931 |
3 |
Other owners | 215 |