- All sections
- H - Electricity
- H05B - Electric heating; electric light sources not otherwise provided for; circuit arrangements for electric light sources, in general
- H05B 41/18 - Circuit arrangements in which the lamp is fed by dc or by low-frequency ac, e.g. by 50 cycles/sec ac having a starting switch
Patent holdings for IPC class H05B 41/18
Total number of patents in this class: 27
10-year publication summary
|
3
|
1
|
3
|
1
|
0
|
0
|
0
|
0
|
0
|
0
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| MITSUBISHI DENKI KABUSHIKI KAISHA also trading as Mitsubishi Electric Corporation | 1082 |
3 |
| Vode Lighting LLC | 51 |
2 |
| IGT (International Game Technology) | 5088 |
1 |
| NEC Corporation | 32703 |
1 |
| Panasonic Electric Works Co., Ltd. | 782 |
1 |
| GM Global Technology Operations LLC | 13620 |
1 |
| Mitsubishi Electric Corporation | 43934 |
1 |
| Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH | 166 |
1 |
| Hamamatsu Photonics K.K. | 4161 |
1 |
| GTE Products Corporation | 8 |
1 |
| Osram AG | 305 |
1 |
| Bag Electronics GmbH | 6 |
1 |
| Easylumen S.r.l. | 3 |
1 |
| EPtronics, Inc. | 11 |
1 |
| Harison Toshiba Lighting Corp. | 48 |
1 |
| Iwasaki Electric Co., Ltd. | 151 |
1 |
| Luxera, Inc. | 3 |
1 |
| N.V. Nederlandsche Apparatenfabriek NEDAP | 66 |
1 |
| Phoenix Electric Co., Ltd. | 43 |
1 |
| Toshiba Lighting & Technology Corporation | 340 |
1 |
| Other owners | 4 |