- All sections
- H - Electricity
- H01R - Electrically-conductive connectionsstructural associations of a plurality of mutually-insulated electrical connecting elementscoupling devicescurrent collectors
- H01R 39/56 - Devices for lubricating or polishing slip-rings or commutators during operation of the collector
Patent holdings for IPC class H01R 39/56
Total number of patents in this class: 18
10-year publication summary
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0
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2
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0
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1
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2
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2
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3
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1
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2
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1
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| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Schunk Carbon Technology GmbH | 36 |
6 |
| Schleifring und Apparatebau GmbH | 80 |
2 |
| Stemmann-Technik GmbH | 38 |
2 |
| Walter Maschinenbau GmbH | 52 |
2 |
| Illinois Tool Works Inc. | 11468 |
1 |
| Bayerische Motoren Werke Aktiengesellschaft | 14394 |
1 |
| Sumitomo Electric Toyama Co., Ltd. | 107 |
1 |
| Schleifring GmbH | 69 |
1 |
| Hitachi Industrial Products, Ltd. | 188 |
1 |
| Siemens Energy Global GmbH & Co. KG | 2974 |
1 |
| Other owners | 0 |