- 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: 3467
10-year publication summary
|
241
|
235
|
185
|
225
|
184
|
208
|
194
|
161
|
168
|
10
|
| 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. | 11114 |
365 |
| Sharp Kabushiki Kaisha | 18855 |
342 |
| Merck Patent GmbH | 5848 |
163 |
| Sharp Display Technology Corporation | 701 |
138 |
| Universal Display Corporation | 1818 |
126 |
| Idemitsu Kosan Co., Ltd. | 4109 |
97 |
| Samsung Display Co., Ltd. | 32868 |
86 |
| Samsung Electronics Co., Ltd. | 139302 |
84 |
| Sumitomo Chemical Company, Limited | 8987 |
84 |
| Nitto Denko Corporation | 8099 |
83 |
| UDC Ireland Limited | 490 |
80 |
| Rohm and Haas Electronic Materials Korea Ltd. | 330 |
56 |
| FUJIFILM Corporation | 28829 |
54 |
| LG Chem, Ltd. | 17643 |
39 |
| Cambridge Display Technology Limited | 504 |
37 |
| Canon Inc. | 38240 |
32 |
| LG Display Co., Ltd. | 12908 |
31 |
| Panasonic Corporation | 20313 |
29 |
| Konica Minolta, Inc. | 8552 |
29 |
| Koninklijke Philips Electronics N.V. | 10809 |
28 |
| Other owners | 1484 |