- 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: 2102
10-year publication summary
|
170
|
161
|
198
|
214
|
119
|
69
|
83
|
40
|
21
|
5
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Sharp Kabushiki Kaisha | 18781 |
234 |
| Konica Minolta, Inc. | 8701 |
152 |
| Pioneer Corporation | 4378 |
109 |
| Semiconductor Energy Laboratory Co., Ltd. | 11385 |
76 |
| Sumitomo Chemical Company, Limited | 9031 |
76 |
| Samsung Display Co., Ltd. | 34472 |
75 |
| FUJIFILM Corporation | 29295 |
66 |
| Sekisui Chemical Co., Ltd. | 3385 |
63 |
| Panasonic Corporation | 20142 |
58 |
| Lintec Corporation | 1965 |
54 |
| Japan Display Inc. | 7010 |
47 |
| Tohoku Pioneer Corporation | 476 |
41 |
| Mitsui Chemicals, Inc. | 3222 |
38 |
| Nitto Denko Corporation | 8219 |
36 |
| Panasonic Intellectual Property Management Co., Ltd. | 31201 |
34 |
| Sakai Display Products Corporation | 789 |
33 |
| Konica Minolta Holdings, Inc. | 930 |
31 |
| Sharp Corporation | 10305 |
28 |
| Sony Semiconductor Solutions Corporation | 10380 |
28 |
| Ajinomoto Co., Inc. | 2304 |
27 |
| Other owners | 796 |