- All sections
- H - Electricity
- H01R - Electrically-conductive connectionsstructural associations of a plurality of mutually-insulated electrical connecting elementscoupling devicescurrent collectors
- H01R 39/08 - Slip-rings
Patent holdings for IPC class H01R 39/08
Total number of patents in this class: 274
10-year publication summary
|
18
|
29
|
21
|
28
|
16
|
22
|
15
|
14
|
30
|
12
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Schleifring GmbH | 71 |
12 |
| Halliburton Energy Services, Inc. | 21320 |
10 |
| Schleifring und Apparatebau GmbH | 76 |
10 |
| Flender GmbH | 421 |
9 |
| Cilag GmbH International | 6415 |
8 |
| Siemens AG | 24020 |
6 |
| Stemmann-Technik GmbH | 48 |
6 |
| Covidien LP | 10653 |
5 |
| CR Flight LLC | 19 |
5 |
| Bayerische Motoren Werke Aktiengesellschaft | 15289 |
4 |
| Schaeffler Technologies AG & Co. KG | 11003 |
4 |
| Beijing GoldWind Science & Creation Windpower Equipment Co., Ltd. | 390 |
4 |
| LTN Servotechnik GmbH | 13 |
4 |
| Prime Datum Development Company, LLC | 28 |
4 |
| Shanghai United Imaging Healthcare Co., Ltd. | 2118 |
4 |
| Wobben Properties GmbH | 1219 |
4 |
| Mitsubishi Electric Corporation | 48048 |
3 |
| Jusung Engineering Co., Ltd. | 492 |
3 |
| Princetel, Inc. | 24 |
3 |
| Seescan, Inc. | 571 |
3 |
| Other owners | 163 |