ALEXANDRIA, Va., May 12 -- United States Patent no. 12,622,477, issued on May 12.
"Hair extension" was invented by Ryuki Hirano (Nagoya, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "ProblemProvided is a practical hair extension configured to be very easily attached to head hair (natural hair) and attachment of which on the head hair is less likely to be noticed by other people.SolutionA hair extension 1 includes a hair bundle 2, a double-sided adhesive tape 3, and a release paper 4. The hair bundle 2 has a base end including a first hair layer L1 formed by laterally aligning a plurality of hairs h1, h1.. such that base end edges of the plurality of hairs are linearly arranged and bonding vicinities o...