- 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: 3516
10-year publication summary
|
235
|
186
|
227
|
182
|
210
|
195
|
163
|
171
|
159
|
107
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Semiconductor Energy Laboratory Co., Ltd. | 11873 |
382 |
| Sharp Kabushiki Kaisha | 18495 |
358 |
| Sharp Display Technology Corporation | 1258 |
239 |
| Merck Patent GmbH | 5739 |
133 |
| Universal Display Corporation | 2098 |
128 |
| Idemitsu Kosan Co., Ltd. | 4263 |
96 |
| Nitto Denko Corporation | 8565 |
91 |
| Samsung Electronics Co., Ltd. | 158605 |
87 |
| UDC Ireland Limited | 505 |
85 |
| Sumitomo Chemical Company, Limited | 8969 |
80 |
| Samsung Display Co., Ltd. | 38914 |
79 |
| FUJIFILM Corporation | 30628 |
56 |
| Rohm and Haas Electronic Materials Korea Ltd. | 332 |
56 |
| Cambridge Display Technology Limited | 473 |
35 |
| LG Chem, Ltd. | 17956 |
34 |
| Canon Inc. | 44134 |
32 |
| Konica Minolta, Inc. | 9159 |
31 |
| Panasonic Corporation | 18809 |
27 |
| LG Display Co., Ltd. | 15018 |
22 |
| Dai Nippon Printing Co., Ltd. | 4254 |
21 |
| Other owners | 1444 |