- All sections
- H - Electricity
- H05B - Electric heating electric light sources not otherwise provided forcircuit 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: 2745
10-year publication summary
|
160
|
164
|
177
|
172
|
162
|
187
|
292
|
202
|
72
|
17
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Sharp Kabushiki Kaisha | 18757 |
356 |
| Semiconductor Energy Laboratory Co., Ltd. | 11428 |
335 |
| Panasonic Corporation | 20088 |
173 |
| Idemitsu Kosan Co., Ltd. | 4224 |
118 |
| Pioneer Corporation | 4340 |
105 |
| Sumitomo Chemical Company, Limited | 9043 |
102 |
| Toray Industries, Inc. | 6950 |
99 |
| Sony Semiconductor Solutions Corporation | 10507 |
95 |
| Sharp Display Technology Corporation | 890 |
81 |
| Sony Corporation | 31025 |
78 |
| Konica Minolta, Inc. | 8755 |
78 |
| Japan Display Inc. | 6971 |
78 |
| FUJIFILM Corporation | 29437 |
72 |
| Joled Inc. | 212 |
61 |
| Canon Kabushiki Kaisha | 7067 |
47 |
| Mitsubishi Chemical Corporation | 4525 |
40 |
| Asahi Glass Company, Limited | 2772 |
31 |
| Dai Nippon Printing Co., Ltd. | 4091 |
30 |
| Tohoku Pioneer Corporation | 475 |
30 |
| Sony Group Corporation | 13918 |
29 |
| Other owners | 707 |