US Patent Issued to NIPRO on July 7 for "Pre-filled syringe" (Japanese Inventors)

ALEXANDRIA, Va., July 7 -- United States Patent no. 12,673,167, issued on July 7, was assigned to NIPRO Corp. (Osaka, Japan).

"Pre-filled syringe" was invented by Ryo Ogino (Osaka, Japan) and Mitsuru Hasegawa (Osaka, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A pre-filled syringe includes a tubular container, a front end gasket, a rear end gasket, an intermediate gasket, and a plunger. The tubular container has an inner peripheral surface, a protruding inner side surface, and a receiving surface. A groove is formed in an outer peripheral surface of the intermediate gasket. The plunger has a connection portion, a pushing portion, and a guide rib. The protruding inner side surface is formed at a posi...