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

US11867660B2 · kind B2 · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Christopher Johnson · San Carlos, US
• Sam Kavusi · Menlo Park, US
• Nadezda Fomina · Loomis, US
• Habib Ahmad · Sunnyvale, US
• Autumn Maruniak · Fremont, US
• Christoph Lang · Palo Alto, US
• Ashwin Raghunathan · Santa Ana, US
• Young Shik Shin · Mountain View, US
• Armin Darvish · Brisbane, US
• Efthymios Papageorgiou · San Jose, US

Key dates

• Filing date: Jul 17, 2020
• Grant date: Jan 9, 2024
• Expiry date: Aug 26, 2042

Classification

• Technology area (CPC G): Physics
• CPC primary: G05D21/02
• WIPO field: Measurement
• WIPO sector: Instruments

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.