US Patent Issued to Gwanak Analog, Seoul National University R&DB Foundation on March 24 for "Dust sensor" (South Korean Inventors)

ALEXANDRIA, Va., March 24 -- United States Patent no. 12,584,856, issued on March 24, was assigned to Gwanak Analog Co. LTD. (Seoul, South Korea) and Seoul National University R&DB Foundation (Seoul, South Korea).

"Dust sensor" was invented by Suhwan Kim (Seoul, South Korea), Hyunjoong Lee (Daejeon, South Korea) and Hyunjong Kim (Seoul, South Korea).

According to the abstract* released by the U.S. Patent & Trademark Office: "A dust sensor includes a photo detector configured to detect light scattered from dust; and a signal processing circuit having a high-pass filter receiving an electric signal generated from output of the photo detector. The signal processing circuit generates a dust detection signal using a signal provided to the high...