- All sections
- H - Electricity
- H01H - Electric switchesrelaysselectorsemergency protective devices
- H01H 35/38 - Switches operated by change of fluid pressure, by fluid pressure waves, or by change of fluid flow actuated by piston and cylinder
Patent holdings for IPC class H01H 35/38
Total number of patents in this class: 44
10-year publication summary
|
6
|
3
|
6
|
4
|
1
|
3
|
0
|
3
|
0
|
1
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Shanghai Roye Electric Co., Ltd. | 40 |
5 |
| Halliburton Energy Services, Inc. | 20697 |
4 |
| Lube Corporation | 38 |
3 |
| Donaldson Company, Inc. | 1595 |
2 |
| Medsell Pty. Ltd. | 4 |
2 |
| Eaton Intelligent Power Limited | 5926 |
2 |
| Hitachi Energy Ltd. | 2174 |
2 |
| Honeywell International Inc. | 13583 |
1 |
| Komatsu Ltd. | 4490 |
1 |
| Argus Machine Co. Ltd. | 8 |
1 |
| Geodynamics, Inc. | 191 |
1 |
| Goodrich Actuation Systems Limited | 237 |
1 |
| Hendrickson USA, L.L.C. | 594 |
1 |
| KCI Licensing, Inc. | 861 |
1 |
| Knorr-Bremse Systeme fur Schienenfahrzeuge GmbH | 571 |
1 |
| Mac Valves, Inc. | 82 |
1 |
| National Chung Shan Institute of Science and Technology | 350 |
1 |
| Schneider Electric Industries SAS | 1471 |
1 |
| SMC Kabushiki Kaisha | 194 |
1 |
| Sodick Co., Ltd. | 300 |
1 |
| Other owners | 11 |