- All sections
- H - Electricity
- H05B - Electric heating electric light sources not otherwise provided forcircuit arrangements for electric light sources, in general
- H05B 33/14 - Light sources with substantially two-dimensional radiating surfaces characterised by the chemical or physical composition or the arrangement of the electroluminescent material
Patent holdings for IPC class H05B 33/14
Total number of patents in this class: 3458
10-year publication summary
|
241
|
235
|
186
|
225
|
182
|
210
|
195
|
161
|
168
|
60
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Semiconductor Energy Laboratory Co., Ltd. | 11358 |
367 |
| Sharp Kabushiki Kaisha | 18799 |
341 |
| Merck Patent GmbH | 5850 |
158 |
| Sharp Display Technology Corporation | 830 |
158 |
| Universal Display Corporation | 1879 |
126 |
| Idemitsu Kosan Co., Ltd. | 4152 |
96 |
| Nitto Denko Corporation | 8182 |
85 |
| Samsung Electronics Co., Ltd. | 144143 |
84 |
| Samsung Display Co., Ltd. | 34230 |
84 |
| Sumitomo Chemical Company, Limited | 9009 |
83 |
| UDC Ireland Limited | 478 |
77 |
| FUJIFILM Corporation | 29228 |
56 |
| Rohm and Haas Electronic Materials Korea Ltd. | 330 |
56 |
| LG Chem, Ltd. | 17561 |
38 |
| Cambridge Display Technology Limited | 497 |
37 |
| Canon Inc. | 39442 |
32 |
| LG Display Co., Ltd. | 13181 |
30 |
| Konica Minolta, Inc. | 8668 |
30 |
| Panasonic Corporation | 20173 |
29 |
| BASF SE | 20777 |
21 |
| Other owners | 1470 |