- All sections
- H - Electricity
- H02P - Control or regulation of electric motors, electric generators or dynamo-electric converters; controlling transformers, reactors or choke coils
- H02P 7/22 - Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using multi-position switch, e.g. drum, controlling motor circuit by means of pilot-motor-operated multi-position switch or pilot-motor-operated variable resistance
Patent holdings for IPC class H02P 7/22
Total number of patents in this class: 7
10-year publication summary
0
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1
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0
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0
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0
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1
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1
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1
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3
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0
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2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
Owner |
All patents
|
This class
|
---|---|---|
Black & Decker, Inc. | 2402 |
2 |
Whirlpool Corporation | 4238 |
2 |
Makita Corporation | 2339 |
1 |
Milwaukee Electric Tool Corporation | 3572 |
1 |
Shenzhen zhongdaxin Epoxy plate CO. Ltd. | 10 |
1 |
Other owners | 0 |