Procter & Gamble has filed a patent for a pH sensing probe that includes a sensor body, a pH glass electrode, a reference electrode, and a backup pH electrode. The backup electrode can be automatically switched to when the pH glass electrode is compromised. This technology aims to improve pH sensing systems. GlobalData’s report on Procter & Gamble gives a 360-degree view of the company including its patenting strategy. Buy the report here.
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According to GlobalData’s company profile on Procter & Gamble, Nanoemulsion cosmetics was a key innovation area identified from patents. Procter & Gamble's grant share as of September 2023 was 52%. Grant share is based on the ratio of number of grants to total number of patents.
A ph sensing probe with multiple electrodes for process fluid
A recently filed patent (Publication Number: US20230314360A1) describes a pH sensing probe and pH sensing system with improved functionality and reliability. The pH sensing probe includes a sensor body, a pH glass electrode, a reference electrode, and a backup pH electrode. The backup pH electrode can be an ISFET electrode and shares the reference electrode with the pH glass electrode. The probe also includes a temperature sensing element to provide information about the process fluid temperature. The sensor body has a cylindrical shape with an electrical connector mounted near the proximal portion for easy connection to other devices. The probe can be mounted to a process using externally threaded portions on the sensor body. The reference junction of the probe electrically couples to the process fluid.
The pH sensing system includes a pH transmitter with a display, user input mechanism, measurement circuitry, and a controller. The pH sensing probe is connected to the pH transmitter and includes a pH glass electrode, a temperature sensing element, a reference electrode, and a backup pH electrode. The controller obtains pH information and process fluid temperature information from the measurement circuitry and provides a temperature-compensated pH process output. The controller is also capable of detecting degradation of the pH glass electrode and taking appropriate actions. These actions can include generating an indication to the user to manually switch wiring to connect the backup pH electrode, or automatically disconnecting the pH glass electrode and connecting the backup pH electrode to the measurement circuitry. The backup pH electrode can be an ISFET electrode. The controller includes a microprocessor for efficient operation.
The patent also describes a method of operating a pH sensing system. The method involves providing a pH sensing probe with a glass pH sensing electrode and a backup pH sensing electrode, sensing pH with the glass pH sensing electrode, detecting degradation of the pH sensing glass, switching to the backup pH sensing electrode, and sensing pH with the backup pH sensing electrode. The backup pH sensing electrode can be an ISFET electrode. The switching from the glass pH sensing electrode to the backup pH sensing electrode can be done automatically upon detecting degradation or in response to a command from an external device.
Overall, this patent introduces a pH sensing probe and system with improved functionality, reliability, and automatic backup capabilities. The inclusion of an ISFET electrode and temperature sensing element enhances the accuracy and performance of the pH sensing system.
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GlobalData Patent Analytics tracks bibliographic data, legal events data, point in time patent ownerships, and backward and forward citations from global patenting offices. Textual analysis and official patent classifications are used to group patents into key thematic areas and link them to specific companies across the world’s largest industries.
