- 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: 88
10-year publication summary
|
7
|
20
|
12
|
19
|
6
|
4
|
4
|
5
|
4
|
1
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Fluid Handling LLC | 244 |
5 |
| GP Enterprises Co., Ltd. | 59 |
5 |
| Dexerials Corporation | 1942 |
4 |
| Emerson Electric Co. | 555 |
3 |
| Pure Humidifier Co. | 9 |
3 |
| iFlo LLC | 10 |
3 |
| 9609385 Canada Inc. | 57 |
2 |
| Fisher Controls International LLC | 1475 |
2 |
| Franklin Fueling Systems, Inc. | 40 |
2 |
| Hill-Rom Services, Inc. | 1124 |
2 |
| Korea Institute of Civil Engineering and Building Technology | 134 |
2 |
| Methode Electronics, Inc. | 152 |
2 |
| Metropolitan Industries, Inc. | 69 |
2 |
| Pedrollo S.p.A. | 57 |
2 |
| Xylem IP Holdings LLC | 136 |
2 |
| Hisense (Guangdong) Air Conditioner Co., Ltd. | 18 |
2 |
| Alderon Industries, Inc. | 3 |
2 |
| Honda Motor Co., Ltd. | 25122 |
1 |
| Siemens AG | 24562 |
1 |
| Seiko Epson Corporation | 19225 |
1 |
| Other owners | 40 |