- All sections
- H - Electricity
- H05B - Electric heating; electric light sources not otherwise provided for; circuit 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: 762
10-year publication summary
|
52
|
58
|
55
|
60
|
43
|
32
|
26
|
48
|
21
|
4
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Konica Minolta, Inc. | 8349 |
133 |
| Semiconductor Energy Laboratory Co., Ltd. | 10902 |
60 |
| Sharp Kabushiki Kaisha | 18957 |
57 |
| Pioneer Corporation | 4843 |
50 |
| Panasonic Corporation | 20786 |
36 |
| Konica Minolta Holdings, Inc. | 1086 |
24 |
| Sony Semiconductor Solutions Corporation | 8770 |
16 |
| Sumitomo Chemical Company, Limited | 8808 |
15 |
| Kabushiki Kaisha Toshiba, doing business as Toshiba Corporation | 6275 |
14 |
| FUJIFILM Corporation | 27102 |
13 |
| Tohoku Pioneer Corporation | 477 |
13 |
| Showa Denko K.K. | 2539 |
13 |
| Idemitsu Kosan Co., Ltd. | 3995 |
13 |
| Panasonic Intellectual Property Management Co., Ltd. | 27812 |
12 |
| Kaneka Corporation | 4445 |
10 |
| Sharp Corporation | 10015 |
9 |
| Japan Display Inc. | 6202 |
9 |
| Joled Inc. | 232 |
9 |
| Toshiba Energy Systems & Solutions Corp. | 954 |
8 |
| Sony Corporation | 32931 |
7 |
| Other owners | 241 |