- All sections
- H - Electricity
- H02M - Apparatus for conversion between ac and ac, between ac and dc, or between dc and dc, and for use with mains or similar power supply systems; conversion of dc or ac input power into surge output power; control or regulation thereof
- H02M 3/28 - Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
Patent holdings for IPC class H02M 3/28
Total number of patents in this class: 1871
10-year publication summary
123
|
139
|
134
|
166
|
146
|
136
|
104
|
119
|
81
|
26
|
2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
Owner |
All patents
|
This class
|
---|---|---|
Mitsubishi Electric Corporation | 43934 |
171 |
Murata Manufacturing Co., Ltd. | 22355 |
103 |
Panasonic Intellectual Property Management Co., Ltd. | 27812 |
66 |
Sumitomo Electric Industries, Ltd. | 14131 |
56 |
Hitachi Automotive Systems, Ltd. | 3970 |
55 |
Rohm Co., Ltd. | 5843 |
44 |
Fuji Electric Co., Ltd. | 4750 |
37 |
Panasonic Corporation | 20786 |
35 |
Sumitomo Wiring Systems, Ltd. | 9367 |
33 |
AutoNetworks Technologies, Ltd. | 5809 |
33 |
Hitachi, Ltd. | 16452 |
31 |
Denso Corporation | 23338 |
31 |
TDK Corporation | 6306 |
28 |
Omron Corporation | 6968 |
26 |
Mitsumi Electric Co., Ltd. | 1041 |
24 |
Shindengen Electric Manufacturing Co., Ltd. | 774 |
24 |
Sanken Electric Co., Ltd. | 484 |
23 |
Huawei Technologies Co., Ltd. | 100781 |
21 |
Sharp Kabushiki Kaisha | 18957 |
21 |
Fujitsu Limited | 19265 |
20 |
Other owners | 989 |