- 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: 2743
10-year publication summary
|
162
|
164
|
177
|
172
|
162
|
187
|
292
|
202
|
72
|
5
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Sharp Kabushiki Kaisha | 18799 |
356 |
| Semiconductor Energy Laboratory Co., Ltd. | 11358 |
338 |
| Panasonic Corporation | 20173 |
173 |
| Idemitsu Kosan Co., Ltd. | 4152 |
118 |
| Pioneer Corporation | 4399 |
105 |
| Sumitomo Chemical Company, Limited | 9009 |
102 |
| Toray Industries, Inc. | 6891 |
99 |
| Sony Semiconductor Solutions Corporation | 10271 |
94 |
| Sony Corporation | 31148 |
78 |
| Konica Minolta, Inc. | 8668 |
78 |
| Japan Display Inc. | 7061 |
78 |
| Sharp Display Technology Corporation | 830 |
74 |
| FUJIFILM Corporation | 29228 |
72 |
| Joled Inc. | 212 |
61 |
| Canon Kabushiki Kaisha | 7042 |
47 |
| Mitsubishi Chemical Corporation | 4485 |
40 |
| Tohoku Pioneer Corporation | 476 |
31 |
| Asahi Glass Company, Limited | 2810 |
31 |
| Dai Nippon Printing Co., Ltd. | 4061 |
30 |
| Sony Group Corporation | 13501 |
28 |
| Other owners | 710 |