- 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: 2771
10-year publication summary
166
|
162
|
164
|
176
|
172
|
162
|
185
|
292
|
202
|
37
|
2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
Owner |
All patents
|
This class
|
---|---|---|
Sharp Kabushiki Kaisha | 18957 |
358 |
Semiconductor Energy Laboratory Co., Ltd. | 10902 |
344 |
Panasonic Corporation | 20786 |
173 |
Idemitsu Kosan Co., Ltd. | 3995 |
127 |
Pioneer Corporation | 4843 |
107 |
Sumitomo Chemical Company, Limited | 8808 |
103 |
Toray Industries, Inc. | 6652 |
96 |
Sony Semiconductor Solutions Corporation | 8770 |
94 |
Sony Corporation | 32931 |
78 |
Konica Minolta, Inc. | 8349 |
78 |
Japan Display Inc. | 6202 |
76 |
FUJIFILM Corporation | 27102 |
73 |
Joled Inc. | 232 |
62 |
Sharp Display Technology Corporation | 390 |
50 |
Canon Kabushiki Kaisha | 6884 |
47 |
Mitsubishi Chemical Corporation | 4313 |
41 |
Dai Nippon Printing Co., Ltd. | 3891 |
31 |
Tohoku Pioneer Corporation | 477 |
31 |
Asahi Glass Company, Limited | 2985 |
31 |
Sony Group Corporation | 10730 |
28 |
Other owners | 743 |