- All sections
- H - Electricity
- H05B - Electric heating electric light sources not otherwise provided forcircuit 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: 7
10-year publication summary
|
2
|
0
|
0
|
0
|
0
|
1
|
0
|
0
|
0
|
0
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Panasonic Corporation | 19853 |
2 |
| Panasonic Electric Works Co., Ltd. | 693 |
1 |
| OSRAM GmbH | 2327 |
1 |
| Hubbell Incorporated | 3376 |
1 |
| Harison Toshiba Lighting Corp. | 29 |
1 |
| Ikeda Electric Co., Ltd. | 4 |
1 |
| Other owners | 0 |