- All sections
- H - Electricity
- H05B - Electric heating; electric light sources not otherwise provided for; circuit arrangements for electric light sources, in general
- H05B 41/28 - Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters
Patent holdings for IPC class H05B 41/28
Total number of patents in this class: 142
10-year publication summary
|
27
|
11
|
16
|
6
|
6
|
3
|
1
|
2
|
3
|
0
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Koninklijke Philips Electronics N.V. | 13133 |
16 |
| OSRAM GmbH | 2442 |
12 |
| Tridonic GmbH & Co KG | 922 |
11 |
| General Electric Company | 18133 |
5 |
| OSRAM SYLVANIA Inc. | 742 |
5 |
| Signify Holding B.V. | 6837 |
5 |
| Seiko Epson Corporation | 18724 |
4 |
| Duke University | 2872 |
4 |
| Immunolight, LLC | 199 |
4 |
| Dialog Semiconductor (UK) Limited | 448 |
3 |
| Lucidity Lights, Inc. | 39 |
3 |
| TridonicAtco GmbH & Co. KG | 58 |
3 |
| Philips Intellectual Property & Standards GmbH | 2395 |
3 |
| Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH | 166 |
2 |
| Osram AG | 305 |
2 |
| ABL IP Holding LLC | 1929 |
2 |
| Goodrich Corporation | 2081 |
2 |
| Infineon Technologies Americas Corp. | 768 |
2 |
| Panacea Quantum Leap Technology LLC | 31 |
2 |
| Silergy Semiconductor Technology (Hangzhou) LTD | 588 |
2 |
| Other owners | 50 |