- All sections
- H - Electricity
- H05B - Electric heating; electric light sources not otherwise provided for; circuit arrangements for electric light sources, in general
- H05B 33/12 - Light sources with substantially two-dimensional radiating surfaces
Patent holdings for IPC class H05B 33/12
Total number of patents in this class: 2708
10-year publication summary
|
166
|
166
|
162
|
164
|
177
|
170
|
162
|
184
|
291
|
58
|
| 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Sharp Kabushiki Kaisha | 18949 |
353 |
| Semiconductor Energy Laboratory Co., Ltd. | 11084 |
308 |
| Panasonic Corporation | 21881 |
173 |
| Idemitsu Kosan Co., Ltd. | 3919 |
139 |
| Pioneer Corporation | 4966 |
107 |
| Sumitomo Chemical Company, Limited | 8566 |
101 |
| Sony Corporation | 36812 |
82 |
| Toray Industries, Inc. | 6428 |
79 |
| Sony Semiconductor Solutions Corporation | 7220 |
79 |
| Konica Minolta, Inc. | 8203 |
78 |
| Japan Display Inc. | 5900 |
75 |
| Joled Inc. | 1462 |
69 |
| FUJIFILM Corporation | 25752 |
63 |
| Canon Kabushiki Kaisha | 6675 |
38 |
| Mitsubishi Chemical Corporation | 4094 |
36 |
| Dai Nippon Printing Co., Ltd. | 3796 |
32 |
| Tohoku Pioneer Corporation | 485 |
31 |
| Asahi Glass Company, Limited | 3114 |
31 |
| Samsung Display Co., Ltd. | 27382 |
29 |
| Fuji Electric Holdings Co., Ltd. | 125 |
29 |
| Other owners | 776 |