- All sections
- H - Electricity
- H05B - Electric heating; electric light sources not otherwise provided for; circuit arrangements for electric light sources, in general
- H05B 33/26 - Light sources with substantially two-dimensional radiating surfaces characterised by the composition or arrangement of the conductive material used as an electrode
Patent holdings for IPC class H05B 33/26
Total number of patents in this class: 1251
10-year publication summary
|
85
|
63
|
65
|
72
|
63
|
49
|
56
|
68
|
49
|
4
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Sharp Kabushiki Kaisha | 18957 |
114 |
| Pioneer Corporation | 4843 |
111 |
| Panasonic Corporation | 20786 |
102 |
| Semiconductor Energy Laboratory Co., Ltd. | 10902 |
95 |
| Konica Minolta, Inc. | 8349 |
88 |
| Sumitomo Chemical Company, Limited | 8808 |
50 |
| Tohoku Pioneer Corporation | 477 |
32 |
| Sony Semiconductor Solutions Corporation | 8770 |
30 |
| Joled Inc. | 232 |
26 |
| Konica Minolta Holdings, Inc. | 1086 |
23 |
| Panasonic Intellectual Property Management Co., Ltd. | 27812 |
22 |
| Sony Corporation | 32931 |
21 |
| Japan Display Inc. | 6202 |
21 |
| FUJIFILM Corporation | 27102 |
18 |
| Dai Nippon Printing Co., Ltd. | 3891 |
17 |
| Showa Denko K.K. | 2539 |
16 |
| Idemitsu Kosan Co., Ltd. | 3995 |
15 |
| Samsung Display Co., Ltd. | 30585 |
14 |
| Mitsubishi Materials Corporation | 2378 |
14 |
| Kabushiki Kaisha Toshiba, doing business as Toshiba Corporation | 6275 |
14 |
| Other owners | 408 |