ALEXANDRIA, Va., June 12 -- United States Patent no. 12,297,346, issued on May 13, was assigned to CROMA-PHARMA GMBH (Leobendorf, Austria).

"Hydrogel composition comprising a crosslinked polymer" was invented by Martin Prinz (Klosterneuburg, Austria), Ralph Hollaus (Vienna) and Robert Sachsenhofer (Vienna).

According to the abstract* released by the U.S. Patent & Trademark Office: "A sterile hydrogel composition that includes a crosslinked polymer, wherein the crosslinked polymer is an oxidation product of a thiol-modified hyaluronan and wherein the thiol-modified hyaluronan has a degree of modification of hyaluronan with thiol moieties of more than about 80 micro metreol per gram polymer, wherein the thiol-modified hyaluronan has a degre...