# US 11,994,487 B2 · Measuring container, measuring system and measuring method > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,994,487 B2 - Document ID: US11994487B2 - Status: Granted - Kind: B2 - Application number: 16/934,802 - Filed: 2020-07-21 - Published: 2020-11-05 - Granted: 2024-05-28 - Earliest claimed: 2018-02-28 - Assignees: Toyo Corporation - Applicants: TOYO Corporation - Inventors: Masaru Inoue; Noriaki Oyabu - Web page: https://patentgrep.com/patent/US11994487B2 ## CPC - G01N 27/07: Construction of measuring vessels; Electrodes therefor - G01N 27/226: {Construction of measuring vessels; Electrodes therefor} - G01N 27/045: {Circuits (measuring resistance per se G01R27/00, e.g. G01R27/22)} - G01N 27/06: of a liquid (involving electrolysis G01N27/26) - G01R 27/26: Measuring inductance or capacitance; Measuring quality factor, e.g. by using the resonance method; Measuring loss factor; Measuring dielectric constants {; Measuring impedance or related variables} - G01R 27/2605: {Measuring capacitance (capacitive sensors G01D5/24)} - G01R 31/312: by capacitive methods - G01D 5/24: by varying capacitance - G01D 5/2405: {by varying dielectric} - G01D 5/2415: {adapted for encoders} - 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) - G01R: MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES (indicating correct tuning of resonant circuits H03J3/12) - G01D: MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR ## Abstract A measuring container for measurement of impurity ions in a liquid includes: a first electrode; a first insulation film formed on the first electrode; a second insulation film formed apart from the first insulation film to create a space into which the liquid is to be sealed; a second electrode on which the second insulation film is formed, the second electrode being arranged to face the first electrode; and a seal material having an inlet through which the liquid is injected into the space, the seal material being configured to seal the space. ## Claims ### Claim 1 A measuring container for measurement of impurity ions in a liquid, the measuring container comprising: a first electrode being a plate electrode configured to cover one side of a space formed inside the measuring container; a first insulation film formed on the first electrode; a second insulation film formed apart from the first insulation film to create the space into which the liquid is to be sealed; a second electrode on which the second insulation film is formed, the second electrode being arranged to face the first electrode and being a plate electrode configured to cover the other side of the space; and a seal material having an inlet through which the liquid is injected into the space, the seal material being configured to seal the space, wherein the first insulation film and the second insulation film are formed to be thin enough to increase a resistivity against the liquid. ### Claim 2 (depends on 1) The measuring container according to claim 1, wherein a resistivity of each of the first insulation film and the second insulation film is at least 100 times as large as a resistivity of the liquid. ### Claim 3 (depends on 1) The measuring container according to claim 1, wherein the first electrode and the second electrode are formed of a conductive material that is unreactive with the liquid. ### Claim 4 (depends on 1) The measuring container according to claim 1, wherein a gap between the first insulation film and the second insulation film differs in accordance with the liquid. ### Claim 5 (depends on 1) The measuring container according to claim 1, wherein the first electrode is formed on a first substrate, and the second electrode is formed on a second substrate arranged to face the first substrate. ### Claim 6 (depends on 1) The measuring container according to claim 1, wherein the inlet includes at least two inlets for injecting the liquid into the space through capillary action. ### Claim 7 A measuring system for measurement of impurity ions in a liquid, the measuring system comprising: a measuring container for measurement of impurity ions in the liquid, the measuring container comprising a first electrode; a first insulation film formed on the first electrode; a second insulation film formed apart from the first insulation film to create a space into which the liquid is to be sealed; a second electrode on which the second insulation film is formed, the second electrode being arranged to face the first electrode; and a seal material having an inlet through which the liquid is injected into the space, the seal material being configured to seal the space; a voltage signal generator configured to apply a triangular wave voltage signal between the first electrode and the second electrode; and a detection circuit configured to detect a current signal of a current that flows in the liquid in accordance with application of the triangular wave voltage signal. ### Claim 8 (depends on 7) The measuring system according to claim 7, wherein a resistivity of each of the first insulation film and the second insulation film is at least 100 times as large as a resistivity of the liquid. ### Claim 9 (depends on 7) The measuring system according to claim 7, wherein the first electrode and the second electrode are formed of a conductive material that is unreactive with the liquid. ### Claim 10 (depends on 7) The measuring system according to claim 7, wherein a gap between the first insulation film and the second insulation film differs in accordance with the liquid. ### Claim 11 (depends on 7) The measuring system according to claim 7, wherein the first electrode is formed on a first substrate, and the second electrode is formed on a second substrate arranged to face the first substrate. ### Claim 12 (depends on 7) The measuring system according to claim 7, further comprising a control apparatus configured to measure impurity ions in the liquid based on the triangular wave voltage signal and the current signal. ### Claim 13 (depends on 7) The measuring system according to claim 7, wherein the inlet includes at least two inlets for injecting the liquid into the space through capillary action. ### Claim 14 A measuring method for measurement of impurity ions in a liquid, the measuring method comprising: applying a triangular wave voltage signal between a first electrode and a second electrode with the liquid sealed in a space of a measuring container for measurement of impurity ions in the liquid, wherein the measuring container comprises the first electrode; a first insulation film formed on the first electrode; a second insulation film formed apart from the first insulation film to create the space into which the liquid is to be sealed; the second electrode on which the second insulation film is formed, the second electrode being arranged to face the first electrode; and a seal material having an inlet through which the liquid is injected into the space, the seal material being configured to seal the space; and detecting a current signal of a current that flows in the liquid in accordance with application of the triangular wave voltage signal. ### Claim 15 (depends on 14) The measuring method according to claim 14, further comprising: measuring impurity ions in the liquid based on the triangular wave voltage signal and the current signal.