- All sections
- H - Electricity
- H05B - Electric heating; electric light sources not otherwise provided for; circuit arrangements for electric light sources, in general
- H05B 33/02 - Electroluminescent light sources - Details
Patent holdings for IPC class H05B 33/02
Total number of patents in this class: 3681
10-year publication summary
|
310
|
246
|
212
|
261
|
308
|
394
|
304
|
334
|
309
|
49
|
| 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Sharp Kabushiki Kaisha | 18949 |
338 |
| Nitto Denko Corporation | 7572 |
314 |
| FUJIFILM Corporation | 25752 |
296 |
| Sumitomo Chemical Company, Limited | 8566 |
255 |
| Konica Minolta, Inc. | 8203 |
248 |
| Semiconductor Energy Laboratory Co., Ltd. | 11084 |
239 |
| Pioneer Corporation | 4966 |
111 |
| Zeon Corporation | 3737 |
92 |
| Japan Display Inc. | 5900 |
87 |
| Panasonic Corporation | 21881 |
80 |
| Nippon Electric Glass Co., Ltd. | 2111 |
69 |
| Sony Semiconductor Solutions Corporation | 7220 |
62 |
| Dai Nippon Printing Co., Ltd. | 3796 |
58 |
| Panasonic Intellectual Property Management Co., Ltd. | 26394 |
54 |
| Asahi Glass Company, Limited | 3114 |
49 |
| Konica Minolta Holdings, Inc. | 1192 |
48 |
| Sony Corporation | 36812 |
47 |
| Toray Industries, Inc. | 6428 |
37 |
| Showa Denko K.K. | 3665 |
35 |
| Sakai Display Products Corporation | 885 |
27 |
| Other owners | 1135 |