ALEXANDRIA, Va., March 3 -- United States Patent no. 12,564,540, issued on March 3, was assigned to NIPRO Corp. (Osaka, Japan).
"Hollow glass body and use of a hollow glass body" was invented by Michael Droessler (Gehrden, Germany).
According to the abstract* released by the U.S. Patent & Trademark Office: "A hollow glass body includes a cylindrical main body portion having a first inside diameter, and a first end opening and a second end opening on opposite ends of the hollow glass body. The hollow glass body has a second inside diameter at the second end opening. The second inside diameter is smaller than the first inside diameter. A difference between the first inside diameter and the second inside diameter is at most 100 micro metre."...