US Patent Issued to D.O.R.C. Dutch Ophthalmic Research Center (International) on Oct. 21 for "Staining composition with improved staining intensity" (Dutch Inventor)

ALEXANDRIA, Va., Oct. 28 -- United States Patent no. 12,447,214, issued on Oct. 21, was assigned to D.O.R.C. Dutch Ophthalmic Research Center (International) B.V. (Zuidland, Netherlands).

"Staining composition with improved staining intensity" was invented by Gerrit Reinold Jacob Melles (Rotterdam, Netherlands).

According to the abstract* released by the U.S. Patent & Trademark Office: "A staining composition is provided with improved staining intensity. The composition comprises a vital dye and hyaluronic acid, wherein the vital dye comprises Chicago Sky Blue and Trypan Blue. The staining composition is used to stain the lens capsule during cataract surgery and provides sufficient contrast such that no air bubble needs to be injected in ...