- 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 7/12 - Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
Patent holdings for IPC class H02M 7/12
Total number of patents in this class: 1143
10-year publication summary
89
|
89
|
84
|
90
|
122
|
100
|
89
|
71
|
52
|
16
|
2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
Owner |
All patents
|
This class
|
---|---|---|
Mitsubishi Electric Corporation | 43934 |
238 |
Daikin Industries, Ltd. | 9495 |
79 |
Toshiba Mitsubishi-Electric Industrial Systems Corporation | 1583 |
54 |
Hitachi, Ltd. | 16452 |
32 |
Panasonic Corporation | 20786 |
27 |
Panasonic Intellectual Property Management Co., Ltd. | 27812 |
27 |
Fuji Electric Co., Ltd. | 4750 |
23 |
Murata Manufacturing Co., Ltd. | 22355 |
22 |
Kabushiki Kaisha Toshiba, doing business as Toshiba Corporation | 6275 |
20 |
Toshiba Carrier Corporation | 567 |
18 |
Shindengen Electric Manufacturing Co., Ltd. | 774 |
16 |
Sumitomo Electric Industries, Ltd. | 14131 |
12 |
Sharp Kabushiki Kaisha | 18957 |
12 |
Huawei Technologies Co., Ltd. | 100781 |
11 |
NTN Corporation | 5008 |
11 |
Hitachi Industrial Equipment Systems Co., Ltd. | 1334 |
11 |
Hitachi-johnson Controls Air Conditioning, Inc. | 499 |
11 |
Denso Corporation | 23338 |
10 |
Omron Corporation | 6968 |
10 |
Siemens AG | 24990 |
9 |
Other owners | 490 |