Auto detaching connector for electronic devices
US-12586954-B2 · Mar 24, 2026 · US
Switches operated by change of liquid level or of liquid density, e.g. float switch (by magnet carried on a float H01H36/02)
Switches operated by change of liquid level or of liquid density, e.g. float switch (by magnet carried on a float H01H36/02) · Cooperative Patent Classification (CPC)
Electric circuits, power, telecommunications, and semiconductors.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | H01H35/18 |
| Official title | Switches operated by change of liquid level or of liquid density, e.g. float switch (by magnet carried on a float H01H36/02) |
| Display label | Switches operated by change of liquid level or of liquid density, e.g. float switch (by magnet carried on a float H01H36/02) |
| Total patents | 58 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly declining.
| Year | Patents |
|---|---|
| 2015 | 6 |
| 2016 | 5 |
| 2017 | 4 |
| 2018 | 5 |
| 2019 | 10 |
| 2020 | 7 |
| 2021 | 9 |
| 2022 | 3 |
| 2023 | 3 |
| 2024 | 3 |
| 2025 | 2 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Flush switch for aircraft lavatory unit
US-2025223039-A1 · Jul 10, 2025 · US
Overflow detection system for a grease trap
US-12287232-B2 · Apr 29, 2025 · US
Overflow detection system for a grease trap
US-2024393158-A1 · Nov 28, 2024 · US
Auto detaching connector for electronic devices
US-2024347970-A1 · Oct 17, 2024 · US
Switching device and a liquid level detection apparatus employing the switching device
US-11953365-B2 · Apr 9, 2024 · US
Vibrating fork liquid level switch with verification
US-11828641-B2 · Nov 28, 2023 · US
Vibrating fork liquid level switch with verification
US-2023296421-A1 · Sep 21, 2023 · US
Switching device and a liquid level detection apparatus employing the switching device
US-2023132194-A1 · Apr 27, 2023 · US
Structure for operating watertight door by buoyancy
US-11447996-B2 · Sep 20, 2022 · US
Battery disconnection using water sensing for underwater battery-powered pool cleaning devices
US-2022189718-A1 · Jun 16, 2022 · US
Liquid level sensor mounting systems and methods
US-11255571-B2 · Feb 22, 2022 · US
System and method for detecting and alerting of flooding in telecommunications manholes
US-2021306467-A1 · Sep 30, 2021 · US
System and method for detecting and alerting of flooding in telecommunications manholes
US-11134156-B1 · Sep 28, 2021 · US
Methods for controlling the power supply of a vacuum cleaner motor
US-11101088-B2 · Aug 24, 2021 · US
System and method for temporarily and permanently disabling electronics in a disposable surgical tool
US-2021169551-A1 · Jun 10, 2021 · US
Incontinence detection system
US-10959659-B2 · Mar 30, 2021 · US
Switch device, electronic component, and battery system
US-10964495-B2 · Mar 30, 2021 · US
Liquid-Dispensing System, Apparatus and Method
US-2021078027-A1 · Mar 18, 2021 · US
Structure for operating watertight door by buoyancy
US-2021032916-A1 · Feb 4, 2021 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC H01H35/18?
- CPC H01H35/18 is the Cooperative Patent Classification code for “Switches operated by change of liquid level or of liquid density, e.g. float switch (by magnet carried on a float H01H36/02).”
- How many patents are filed under CPC H01H35/18 (Switches operated by change of liquid level or of liquid density, e.g. float switch (by magnet carried on a float H01H36/02))?
- Our database includes 58 publications tagged with this CPC code.
- Is patent activity under CPC H01H35/18 growing?
- Publication counts under this code: 3 in 2024 vs 2 in 2025 (latest complete years).