ALEXANDRIA, Va., June 25 -- United States Patent no. 12,336,580, issued on June 24, was assigned to Junna Zou (Rongcheng, China).
"Hair weft and preparation process thereof" was invented by Junna Zou (Rongcheng, China), Xiangpeng Lian (Rongcheng, China) and Jiarong Sun (Rongcheng, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "A hair weft includes a first hair weft unit and a second weft unit, the first hair weft unit includes a first hair strand a first glue base, wherein the first hair strand is fixed to the first glue base, the second weft unit includes a second hair strand a second glue base, wherein the second hair strand is fixed to the second glue base, wherein the first glue base is attached to...