- All sections
- F - Mechanical engineering; lighting; heating; weapons; blasting
- F21V - Functional features or details of lighting devices or systems thereof; structural combinations of lighting devices with other articles, not otherwise provided for
- F21V 9/38 - Combination of two or more photoluminescent elements of different materials
Patent holdings for IPC class F21V 9/38
Total number of patents in this class: 177
10-year publication summary
|
0
|
1
|
1
|
16
|
27
|
39
|
36
|
35
|
20
|
7
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Panasonic Intellectual Property Management Co., Ltd. | 27812 |
18 |
| Signify Holding B.V. | 6837 |
16 |
| Kyocera Corporation | 12735 |
13 |
| Quarkstar LLC | 215 |
13 |
| Korrus, Inc. | 447 |
12 |
| Toray Industries, Inc. | 6652 |
8 |
| Nichia Corporation | 3394 |
6 |
| FUJIFILM Corporation | 27102 |
5 |
| Sharp Kabushiki Kaisha | 18957 |
5 |
| Ichikoh Industries, Ltd. | 303 |
4 |
| Sony Group Corporation | 10730 |
4 |
| Sony Corporation | 32931 |
3 |
| Delta Electronics, Inc. | 2401 |
3 |
| Mitsubishi Chemical Corporation | 4313 |
3 |
| Maxim Lighting International, Inc. | 23 |
3 |
| National Institute for Materials Science | 1108 |
3 |
| ABL IP Holding LLC | 1929 |
2 |
| Bridgelux, Inc. | 351 |
2 |
| Foshan Nationstar Optoelectronics Co., Ltd. | 88 |
2 |
| Koito Manufacturing Co., Ltd. | 1991 |
2 |
| Other owners | 50 |