ALEXANDRIA, Va., June 25 -- United States Patent no. 12,339,209, issued on June 24.
"Particles counting device that can be maintained by replacement" was invented by Jun Cheol Park (Gyeonggi-do, South Korea).
According to the abstract* released by the U.S. Patent & Trademark Office: "A particles counting device according to an embodiment includes a body module, and an attachable/detachable chamber module inserted into the body module in an attachable/detachable manner, wherein the attachable/detachable chamber module is provided to include a memory that stores a reference voltage value for each channel, and extract the reference voltage value for each channel from the memory for counting the number of particles according to a light scatte...