- All sections
- H - Electricity
- H05B - Electric heating electric light sources not otherwise provided forcircuit arrangements for electric light sources, in general
- H05B 33/04 - Sealing arrangements
Patent holdings for IPC class H05B 33/04
Total number of patents in this class: 2044
10-year publication summary
|
161
|
198
|
214
|
120
|
69
|
84
|
40
|
21
|
6
|
5
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Sharp Kabushiki Kaisha | 18523 |
233 |
| Konica Minolta, Inc. | 9119 |
152 |
| Pioneer Corporation | 3779 |
106 |
| Semiconductor Energy Laboratory Co., Ltd. | 11821 |
74 |
| Sumitomo Chemical Company, Limited | 9016 |
73 |
| Samsung Display Co., Ltd. | 38627 |
66 |
| FUJIFILM Corporation | 30514 |
66 |
| Sekisui Chemical Co., Ltd. | 3614 |
63 |
| Panasonic Corporation | 19019 |
58 |
| Lintec Corporation | 2008 |
54 |
| Tohoku Pioneer Corporation | 467 |
41 |
| Japan Display Inc. | 2997 |
41 |
| Mitsui Chemicals, Inc. | 3246 |
37 |
| Nitto Denko Corporation | 8536 |
36 |
| Panasonic Intellectual Property Management Co., Ltd. | 33997 |
34 |
| Sakai Display Products Corporation | 783 |
33 |
| Sony Semiconductor Solutions Corporation | 11577 |
29 |
| Sharp Corporation | 10545 |
28 |
| Ajinomoto Co., Inc. | 2277 |
27 |
| Konica Minolta Holdings, Inc. | 790 |
26 |
| Other owners | 767 |