- All sections
- H - Electricity
- H05B - Electric heating; electric light sources not otherwise provided for; circuit arrangements for electric light sources, in general
- H05B 45/325 - Pulse-width modulation [PWM]
Patent holdings for IPC class H05B 45/325
Total number of patents in this class: 616
10-year publication summary
|
3
|
0
|
1
|
6
|
15
|
107
|
148
|
163
|
151
|
41
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Lumileds LLC | 1827 |
30 |
| Samsung Electronics Co., Ltd. | 131630 |
26 |
| Rohm Co., Ltd. | 5843 |
23 |
| Signify Holding B.V. | 6837 |
23 |
| Koito Manufacturing Co., Ltd. | 1991 |
17 |
| Xiamen Eco Lighting Co. Ltd. | 288 |
17 |
| Valeo Vision | 1219 |
14 |
| ERP Power LLC | 62 |
11 |
| ABL IP Holding LLC | 1929 |
9 |
| Xiamen Leedarson Lighting Co.Ltd. | 103 |
9 |
| OSRAM Opto Semiconductors GmbH | 3390 |
7 |
| Novatek Microelectronics Corp. | 1221 |
7 |
| LX Semicon Co., Ltd. | 311 |
7 |
| DMF, Inc. | 119 |
6 |
| STMicroelectronics S.r.l. | 3693 |
5 |
| Elemental LED, Inc. | 165 |
5 |
| Xiamen PVTECH Co., Ltd. | 84 |
5 |
| Hella GmbH & Co. KGaA | 1392 |
5 |
| Lutron Technology Company LLC | 2300 |
5 |
| Texas Instruments Incorporated | 19376 |
4 |
| Other owners | 381 |