- All sections
- H - Electricity
- H05B - Electric heating electric light sources not otherwise provided forcircuit arrangements for electric light sources, in general
- H05B 33/22 - Light sources with substantially two-dimensional radiating surfaces characterised by the chemical or physical composition or the arrangement of auxiliary dielectric or reflective layers
Patent holdings for IPC class H05B 33/22
Total number of patents in this class: 1894
10-year publication summary
|
101
|
121
|
169
|
102
|
102
|
181
|
115
|
47
|
44
|
27
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Sharp Kabushiki Kaisha | 18523 |
225 |
| Semiconductor Energy Laboratory Co., Ltd. | 11821 |
199 |
| Panasonic Corporation | 19019 |
123 |
| Pioneer Corporation | 3779 |
107 |
| Sharp Display Technology Corporation | 1209 |
85 |
| Toray Industries, Inc. | 7113 |
76 |
| FUJIFILM Corporation | 30514 |
67 |
| Japan Display Inc. | 2997 |
66 |
| Sumitomo Chemical Company, Limited | 9016 |
56 |
| Sony Corporation | 30181 |
49 |
| Sony Semiconductor Solutions Corporation | 11577 |
48 |
| Joled Inc. | 211 |
47 |
| Showa Denko K.K. | 2069 |
45 |
| Tohoku Pioneer Corporation | 467 |
44 |
| Samsung Display Co., Ltd. | 38627 |
33 |
| Asahi Glass Company, Limited | 2622 |
33 |
| Konica Minolta, Inc. | 9119 |
31 |
| LG Chem, Ltd. | 17921 |
22 |
| Mitsubishi Chemical Corporation | 4724 |
22 |
| Sony Group Corporation | 15642 |
21 |
| Other owners | 495 |