- All sections
- H - Electricity
- H01H - Electric switchesrelaysselectorsemergency protective devices
- H01H 35/18 - Switches operated by change of liquid level or of liquid density, e.g. float switch
Patent holdings for IPC class H01H 35/18
Total number of patents in this class: 89
10-year publication summary
|
16
|
11
|
18
|
6
|
4
|
4
|
5
|
4
|
4
|
1
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Fluid Handling LLC | 251 |
5 |
| GP Enterprises Co., Ltd. | 61 |
5 |
| Dexerials Corporation | 1980 |
4 |
| Pure Humidifier Co. | 12 |
4 |
| iFlo LLC | 17 |
4 |
| Emerson Electric Co. | 528 |
3 |
| 9609385 Canada Inc. | 57 |
2 |
| Fisher Controls International LLC | 1494 |
2 |
| Franklin Fueling Systems, Inc. | 39 |
2 |
| Hill-Rom Services, Inc. | 1149 |
2 |
| Korea Institute of Civil Engineering and Building Technology | 136 |
2 |
| Methode Electronics, Inc. | 146 |
2 |
| Metropolitan Industries, Inc. | 70 |
2 |
| Pedrollo S.p.A. | 60 |
2 |
| Hisense (Guangdong) Air Conditioner Co., Ltd. | 18 |
2 |
| Alderon Industries, LLC | 3 |
2 |
| Honda Motor Co., Ltd. | 25804 |
1 |
| Siemens AG | 24329 |
1 |
| Seiko Epson Corporation | 19881 |
1 |
| Denso Corporation | 25062 |
1 |
| Other owners | 40 |