- All sections
- H - Electricity
- H05B - Electric heating; electric light sources not otherwise provided for; circuit arrangements for electric light sources, in general
- H05B 45/52 - Circuit arrangements for operating light-emitting diodes [LED] responsive to LED life; Protective circuits in a parallel array of LEDs
Patent holdings for IPC class H05B 45/52
Total number of patents in this class: 67
10-year publication summary
|
0
|
1
|
0
|
3
|
11
|
16
|
11
|
11
|
12
|
2
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Signify Holding B.V. | 7237 |
9 |
| Infineon Technologies AG | 8137 |
3 |
| BNSF Railway Company | 370 |
3 |
| Valeo Vision | 1400 |
3 |
| Ledup Manufacturing Group Ltd. | 20 |
3 |
| DVA Holdings LLC | 37 |
3 |
| Texas Instruments Incorporated | 19432 |
2 |
| DVA Mayday Corporation, DBA Deltavation | 31 |
2 |
| Grote Industries, Inc. | 153 |
2 |
| Koito Manufacturing Co., Ltd. | 2129 |
2 |
| Ledvance LLC | 325 |
2 |
| MTD Products Inc | 719 |
2 |
| Hella GmbH & Co. KGaA | 1524 |
2 |
| Lutron Technology Company LLC | 2424 |
2 |
| Hotalux, Ltd. | 91 |
2 |
| Xiamen Leedarson Lighting Co.Ltd. | 103 |
2 |
| Denso Wave Incorporated | 382 |
1 |
| Rohm Co., Ltd. | 6346 |
1 |
| Hamamatsu Photonics K.K. | 4304 |
1 |
| OSRAM GmbH | 2412 |
1 |
| Other owners | 19 |