ALEXANDRIA, Va., Feb. 17 -- United States Patent no. 12,551,676, issued on Feb. 17, was assigned to DARWIN PRECISIONS Corp. (Hsinchu County, Taiwan).
"Microneedle device" was invented by Wen-Chuan Chen (Hsinchu County, Taiwan) and Cheng-Hsiung Chen (Hsinchu County, Taiwan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A microneedle device includes a substrate and a plurality of microneedle structures. The substrate is provided with a first surface, where the first surface has a surface roughness ranged from 0.05 micro metre to 2.0 micro metre. The plurality of microneedle structures are configured on the first surface. Because the surface of the microneedle device has a surface roughness of 0.05 micro metre ...