- 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: 754
10-year publication summary
|
58
|
55
|
61
|
43
|
32
|
26
|
48
|
21
|
7
|
2
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Konica Minolta, Inc. | 8696 |
133 |
| Semiconductor Energy Laboratory Co., Ltd. | 11381 |
60 |
| Sharp Kabushiki Kaisha | 18788 |
57 |
| Pioneer Corporation | 4390 |
50 |
| Panasonic Corporation | 20149 |
36 |
| Konica Minolta Holdings, Inc. | 931 |
24 |
| Sony Semiconductor Solutions Corporation | 10355 |
16 |
| Sumitomo Chemical Company, Limited | 9027 |
15 |
| Tohoku Pioneer Corporation | 475 |
14 |
| Kabushiki Kaisha Toshiba, doing business as Toshiba Corporation | 6275 |
14 |
| Showa Denko K.K. | 2266 |
13 |
| FUJIFILM Corporation | 29273 |
12 |
| Panasonic Intellectual Property Management Co., Ltd. | 31084 |
12 |
| Kaneka Corporation | 4496 |
10 |
| Sharp Corporation | 10305 |
9 |
| Idemitsu Kosan Co., Ltd. | 4198 |
9 |
| Japan Display Inc. | 7082 |
9 |
| Joled Inc. | 212 |
9 |
| Sharp Display Technology Corporation | 841 |
9 |
| Toshiba Energy Systems & Solutions Corp. | 1071 |
8 |
| Other owners | 235 |