# US 2018/0024023 A1 · Liquid sensor

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- Number: US 2018/0024023 A1
- Document ID: US20180024023A1
- Status: Published application
- Kind: A1
- Application number: 15/547,421
- Filed: 2016-01-29
- Published: 2018-01-25
- Earliest claimed: 2015-01-29
- Assignees: Aram Corporation
- Applicants: Aram Corporation
- Inventors: Shingo YOSHITOMI; Akira TSUJIOKA; Norikazu KUWASHIRO
- Web page: https://patentgrep.com/patent/US20180024023A1

## CPC

- G01M 3/16: using electric detection means ({G01M3/045,} G01M3/06, G01M3/12, G01M3/20, G01M3/24, G01M3/26 take precedence)
- G01N 27/06: of a liquid (involving electrolysis G01N27/26)
- G01M: TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01N: INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES (measuring or testing apparatus or processes other than immunoassay, involving enzymes or microorganisms C12M, C12Q)

## Abstract

A liquid sensor comprising a laminate including a first conductive layer, an insulation layer, and a second conductive layer layered in this order, wherein the laminate has through holes penetrating the first conductive layer, the insulation layer, and the second conductive layer in the lamination direction, and the first conductive layer and the second conductive layer are layers of a resin having electrical conductivity.

## Claims

### Claim 1

A liquid sensor comprising a laminate comprising a first conductive layer, an insulation layer, and a second conductive layer layered in this order, wherein
the laminate has through holes penetrating the first conductive layer, the insulation layer, and the second conductive layer in the lamination direction, and
the first conductive layer and the second conductive layer are layers of a resin having electrical conductivity.

### Claim 2 (depends on 1)

The liquid sensor according to claim 1, wherein the resin having electrical conductivity comprises an electrical conductive polymer.

### Claim 3 (depends on 1)

The liquid sensor according to claim 1, wherein the laminate further has a second liquid absorptive layer capable of absorbing liquid on a side opposite to the insulation layer of the second conductive layer.

### Claim 4 (depends on 1)

The liquid sensor according to claim 1, wherein the laminate further has a first liquid absorptive layer capable of absorbing liquid on a side opposite to the insulation layer of the first conductive layer.

### Claim 5 (depends on 4)

The liquid sensor according to claim 4, wherein a basis weight of the first liquid absorptive layer is 10 to 200 g/m2.

### Claim 6 (depends on 3)

The liquid sensor according to claim 3, wherein the laminate further has a first liquid absorptive layer capable of absorbing liquid on a side opposite to the insulation layer of the first conductive layer.