ALEXANDRIA, Va., Dec. 2 -- United States Patent no. 12,488,875, issued on Dec. 2, was assigned to Guangzhou Shifei Bio-Tech Co. Ltd. (Guangzhou, China).
"Targeted control method and system for blackhead removal" was invented by Shenjun Zhang (Guangzhou, China) and Xiangjun Ren (Guangzhou, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "A targeted control method for blackhead removal includes steps of: collecting spectral response data of skin surfaces of users based on a spectral imaging technology, analyzing sebum contents and a pore states, identifying skin areas with blackheads and clogged pores, and obtaining spectral data analysis results. In the targeted control method for blackhead removal, the s...