ALEXANDRIA, Va., Aug. 5 -- United States Patent no. 12,697,444, issued on Aug. 4, was assigned to KAO Corp. (Tokyo).
"Injection needle" was invented by Wataru Hariu (Utsunomiya, Japan), Takatoshi Niitsu (Utsunomiya, Japan) and Tomoya Nishimura (Tokyo).
According to the abstract* released by the U.S. Patent & Trademark Office: "An injection needle includes: protrusions that protrude from a sheet base. The protrusions include a first protrusion having an opening at a tip end portion and being hollow, a second protrusion having no opening at a tip end portion; and an insertion depth controller provided at an intermediate position lower than a tip end position of the first protrusion and higher than a surface of the sheet base. A difference i...