US 2020/0363371 A1Published application

Electronic control of the ph of a solution close to an electrode surface

AssigneeRobert Bosch GmbH

InventorsChristopher Johnson, Sam Kavusi, Nadezda Fomina, Habib Ahmad, Autumn Maruniak, Christoph Lang, Ashwin Raghunathan, Young Shik Shin, Armin Darvish, Efthymios Papageorgiou

Life of this patent

Estimating the term…

patentgrep

Loading patent…

Abstract

Device and methods for controlling pH or ionic gradient comprising a multisite array of feedback electrode sets comprising electrodes and pH sensing elements. The electrodes can include a reference electrode, counter electrode, and a working electrode. The device and methods iteratively select an amount of current and/or voltage to be applied to each working electrode, apply the selected amount of current and/or voltage to each working electrode to change pH of a solution close to the working electrode, and measure the signal output of the sensing element. The multisite array can include feedback and non-feedback electrode sets.

Claims20

Dependent claims

A device for controlling pH of a solution on an array of electrodes, the device comprising:

a support;
and
an array of electrodes comprising one or more feedback-controlling electrode set(s) that each includes:
one or more reference electrode(s);
one or more counter electrode(s);
and
one or more subset(s) comprising a pH sensing element electrically coupled to a working electrode;
wherein:
a reference electrode of the one or more reference electrode(s) and/or a counter electrode of the one or more counter electrode(s) is electrically coupled with at least one of the one or more subset(s);
and
the device is configured to iteratively perform the following:
a) select a respective amount of current and/or voltage to be applied to at least one of the one or more working electrode(s) in order to minimize a difference between a signal output of the coupled sensing element(s) and a target sensing value;
b) apply the selected respective amount of current and/or voltage to the at least one of the one or more working electrode(s) to change pH of a solution close to the respective working electrode(s);
and
c) measure the signal output of the coupled sensing element(s).

12 more elements

A method of controlling a pH of a solution using a device that includes a feedback-controlling electrode set, the feedback-controlling electrode set including (1) one or more reference electrode(s), (2) one or more counter electrode(s), and (3) one or more subset(s), the one or more subset(s) each including a pH sensing element electrically coupled to a working electrode, wherein a reference electrode of the one or more reference electrode(s) and/or a counter electrode of the one or more counter electrode(s) is electrically coupled with one or more of the subset(s), the method comprising;

b. selecting a target sensing value for a sensing element based on one or more signal(s) output from a sensing element in a solution with a target pH;
and
c. iteratively performing the following:
i. selecting a respective amount of current and/or voltage to be applied to at least one of the working electrode(s) of the feedback-controlling electrode set in order to minimize a difference between a signal output of the sensing element and the target sensing value;
ii. applying the selected respective amount of current and/or voltage to the at least one of the working electrode(s) of the feedback-controlling electrode set to change pH of a solution close to the respective working electrode of the feedback-controlling electrode set;
and
iii. measuring the signal output of the sensing element.

4 more elements

Dependencies are inferred from the claim text.

Facts

Application: 16/932,096Filed 17 Jul 2020
Priority: 6 Jul 2015
Published: 19 Nov 2020
Term ends: Not estimatedThe source records don’t support an estimate.

Classification9 codes

G01N 27/4167
Measuring a particular property of an electrolyte: pH
C12Q 1/001
Measuring or testing processes involving enzymes, nucleic acids or microorganisms ; Compositions therefor; Processes of preparing such…
G01N 27/302
Electrodes, e.g. test electrodes; Half-cells: pH sensitive, e.g. quinhydron, antimony or hydrogen electrodes
G01N 27/34
Electrodes, e.g. test electrodes; Half-cells: dropping-mercury electrodes

Family

Application14/792,576Division · filed 6 Jul 2015
Application16/227,466Continuation in part · filed 20 Dec 2018
Application16/932,096Continuation in part
Application16/227,466Division
US 10,379,080 B2Related patent
US 11,561,198 B2Related patent
US 11,867,660 B2Related patent
US 2017/0010238 A1Published application
US 2019/0137444 A1Published application
US 2020/0363371 A1This patent

From the US filing history. Foreign family members aren’t listed.