- All sections
- H - Electricity
- H05B - Electric heating; electric light sources not otherwise provided for; circuit arrangements for electric light sources, in general
- H05B 41/295 - 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 with semiconductor devices and specially adapted for lamps with preheating electrodes, e.g. for fluorescent lamps
Patent holdings for IPC class H05B 41/295
Total number of patents in this class: 109
10-year publication summary
5
|
4
|
0
|
5
|
2
|
1
|
2
|
0
|
1
|
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 |
17 |
OSRAM GmbH | 2442 |
11 |
Tridonic GmbH & Co KG | 922 |
11 |
General Electric Company | 18133 |
9 |
Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH | 166 |
7 |
Osram AG | 305 |
7 |
Lutron Technology Company LLC | 2300 |
7 |
Delta Electronics, Inc. | 2401 |
4 |
Lutron Electronics Co., Inc. | 541 |
3 |
TridonicAtco GmbH & Co. KG | 58 |
3 |
Heraeus Noblelight GmbH | 233 |
2 |
NXP B.V. | 2185 |
2 |
Matsushita Electric Works, Ltd. | 229 |
1 |
Seiko Epson Corporation | 18724 |
1 |
Robert Bosch GmbH | 40953 |
1 |
Koninklijke Philips N.V. | 22975 |
1 |
Industrial Technology Research Institute | 4898 |
1 |
Marvell World Trade Ltd. | 957 |
1 |
Shimadzu Corporation | 5791 |
1 |
OSRAM SYLVANIA Inc. | 742 |
1 |
Other owners | 18 |