- All sections
- H - Electricity
- H05B - Electric heating; electric light sources not otherwise provided for; circuit arrangements for electric light sources, in general
- H05B 33/24 - Light sources with substantially two-dimensional radiating surfaces characterised by the chemical or physical composition or the arrangement of auxiliary dielectric or reflective layers of metallic reflective layers
Patent holdings for IPC class H05B 33/24
Total number of patents in this class: 390
10-year publication summary
|
25
|
29
|
32
|
26
|
25
|
23
|
17
|
22
|
27
|
3
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Sharp Kabushiki Kaisha | 18957 |
58 |
| Semiconductor Energy Laboratory Co., Ltd. | 10902 |
45 |
| Pioneer Corporation | 4843 |
43 |
| Sony Corporation | 32931 |
27 |
| Sony Semiconductor Solutions Corporation | 8770 |
22 |
| Panasonic Corporation | 20786 |
20 |
| Konica Minolta, Inc. | 8349 |
17 |
| Canon Kabushiki Kaisha | 6884 |
17 |
| Nitto Denko Corporation | 7879 |
11 |
| Sharp Corporation | 10015 |
10 |
| Joled Inc. | 232 |
10 |
| Idemitsu Kosan Co., Ltd. | 3995 |
9 |
| Sony Group Corporation | 10730 |
8 |
| Mitsui Mining & Smelting Co., Ltd. | 1373 |
7 |
| FUJIFILM Corporation | 27102 |
6 |
| Sumitomo Chemical Company, Limited | 8808 |
6 |
| Panasonic Intellectual Property Management Co., Ltd. | 27812 |
5 |
| Tohoku Pioneer Corporation | 477 |
5 |
| Samsung Display Co., Ltd. | 30585 |
4 |
| Hitachi, Ltd. | 16452 |
4 |
| Other owners | 56 |