- All sections
- H - Electricity
- H05B - Electric heating electric light sources not otherwise provided forcircuit arrangements for electric light sources, in general
- H05B 33/28 - Light sources with substantially two-dimensional radiating surfaces characterised by the composition or arrangement of the conductive material used as an electrode of translucent electrodes
Patent holdings for IPC class H05B 33/28
Total number of patents in this class: 756
10-year publication summary
|
58
|
55
|
60
|
43
|
32
|
26
|
48
|
21
|
7
|
0
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Konica Minolta, Inc. | 8552 |
133 |
| Semiconductor Energy Laboratory Co., Ltd. | 11114 |
60 |
| Sharp Kabushiki Kaisha | 18855 |
57 |
| Pioneer Corporation | 4620 |
51 |
| Panasonic Corporation | 20313 |
36 |
| Konica Minolta Holdings, Inc. | 1007 |
24 |
| Sony Semiconductor Solutions Corporation | 9741 |
16 |
| Sumitomo Chemical Company, Limited | 8987 |
15 |
| Tohoku Pioneer Corporation | 479 |
14 |
| Kabushiki Kaisha Toshiba, doing business as Toshiba Corporation | 6243 |
14 |
| Showa Denko K.K. | 2336 |
13 |
| FUJIFILM Corporation | 28829 |
12 |
| Panasonic Intellectual Property Management Co., Ltd. | 29800 |
12 |
| Idemitsu Kosan Co., Ltd. | 4109 |
10 |
| Kaneka Corporation | 4495 |
10 |
| Sharp Corporation | 10194 |
9 |
| Japan Display Inc. | 6799 |
9 |
| Joled Inc. | 232 |
9 |
| Toshiba Energy Systems & Solutions Corp. | 1031 |
8 |
| Sony Corporation | 31530 |
7 |
| Other owners | 237 |