ALEXANDRIA, Va., March 19 -- United States Patent no. 12,253,500, issued on March 18, was assigned to American Sterilizer Co. (Mentor, Ohio).
"Gas sterilization process challenge device" was invented by Harry Bala (South Barrington, Ill.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A sterilization challenge device for verifying the efficacy of a gas sterilization process includes an outer container, an inner container, a chemical indicator, and a cap. The outer container includes an open end, a closed end, a chamber configured to contain the inner container containing the chemical indicator, and at least one hole arranged proximate the open end. The cap is configured to engage with the outer container to c...