- All sections
- H - Electricity
- H05B - Electric heating; electric light sources not otherwise provided for; circuit arrangements for electric light sources, in general
- H05B 41/231 - Circuit arrangements in which the lamp is fed by dc or by low-frequency ac, e.g. by 50 cycles/sec ac having no starting switch for lamps not having an auxiliary starting electrode for high-pressure lamps
Patent holdings for IPC class H05B 41/231
Total number of patents in this class: 9
10-year publication summary
0
|
1
|
2
|
0
|
0
|
0
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0
|
1
|
0
|
0
|
2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
Owner |
All patents
|
This class
|
---|---|---|
Panasonic Corporation | 20786 |
2 |
Panasonic Electric Works Co., Ltd. | 782 |
1 |
OSRAM GmbH | 2442 |
1 |
Hubbell Incorporated | 3052 |
1 |
Harison Toshiba Lighting Corp. | 48 |
1 |
Ikeda Electric Co., Ltd. | 7 |
1 |
Phoenix Electric Co., Ltd. | 43 |
1 |
Sharp Kabushiki Kaisha | 18957 |
1 |
Other owners | 0 |