MUMBAI, India, Oct. 26 -- Intellectual Property India has published a patent application (202611114311 A) filed by Indian Institute Of Technology Delhi on September 24, 2026, for Feedback-Controlled Optical Biomass Measurement Apparatus And Method.

Inventors include Narang, Atul; and Saha, Kaushik.

The application for the patent was published on October 23, 2026, under issue no. 43/2026.

Abstract: An optical biomass measurement apparatus includes a PWM/LED driver (110), a 590 nm LED (120), a sample cuvette or flow cell (130), a BPW34 photodiode (140), an AD620 analog front end (150), and an ADC and MCU PID/calibration module (160). The module (160) operates a feedback controller through a feedback path (190) to vary source drive so that ...