ALEXANDRIA, Va., March 24 -- United States Patent no. 12,583,156, issued on March 24, was assigned to NISSEI PLASTIC INDUSTRIAL Co. LTD. (Hanishina-Gun, Japan).
"Injection molding machine" was invented by Toshimi Kato (Hanishina-gun, Japan), Hirofumi Murata (Hanishina-gun, Japan) and Hozumi Yoda (Hanishina-gun, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A partial reflux injection function part 5 is provided according to which resin R at the front side of a screw head portion 4s is injected into the metal mold 2 to fill the metal mold 2 with the resin R in synchronization with the refluxing of a predetermined amount of the reflux resin Rm to be used as a part of the resin R to the screw body part 4m...