US Patent Issued to ZEON on Nov. 11 for "Pre-filled syringe and method of producing pre-filled syringe" (Japanese Inventor)

ALEXANDRIA, Va., Nov. 11 -- United States Patent no. 12,466,881, issued on Nov. 11, was assigned to ZEON Corp. (Tokyo).

"Pre-filled syringe and method of producing pre-filled syringe" was invented by Taichi Sawaguchi (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "Provided is a pre-filled syringe that can inhibit protein aggregation in a protein solution formulation while also reducing the produced amount of a decomposition product of a non-ionic surfactant after long-term storage. The pre-filled syringe includes: a barrel formed of a resin containing a hydrogenated cycloolefin ring-opened polymer and/or a copolymer of a cycloolefin and a chain olefin; a sealing member sealing a nozzle of the barrel; a...