- All sections
- H - Electricity
- H05B - Electric heating; electric light sources not otherwise provided for; circuit 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: 3587
10-year publication summary
|
256
|
241
|
235
|
185
|
225
|
183
|
207
|
194
|
161
|
65
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Semiconductor Energy Laboratory Co., Ltd. | 10902 |
361 |
| Sharp Kabushiki Kaisha | 18957 |
345 |
| Merck Patent GmbH | 5909 |
168 |
| Universal Display Corporation | 1678 |
127 |
| Idemitsu Kosan Co., Ltd. | 3995 |
120 |
| Sharp Display Technology Corporation | 390 |
98 |
| Samsung Electronics Co., Ltd. | 131630 |
86 |
| Sumitomo Chemical Company, Limited | 8808 |
86 |
| Samsung Display Co., Ltd. | 30585 |
85 |
| Nitto Denko Corporation | 7879 |
82 |
| UDC Ireland Limited | 496 |
80 |
| Rohm and Haas Electronic Materials Korea Ltd. | 546 |
60 |
| FUJIFILM Corporation | 27102 |
58 |
| LG Chem, Ltd. | 17205 |
41 |
| Cambridge Display Technology Limited | 513 |
39 |
| LG Display Co., Ltd. | 11907 |
32 |
| Koninklijke Philips Electronics N.V. | 13133 |
32 |
| Canon Inc. | 36841 |
31 |
| Panasonic Corporation | 20786 |
29 |
| Konica Minolta, Inc. | 8349 |
29 |
| Other owners | 1598 |