ALEXANDRIA, Va., Nov. 11 -- United States Patent no. 12,465,525, issued on Nov. 11.
"Wound covering with infection indicium" was invented by Eric M.V. Hoek (Los Angeles), M. Yashar S. Kalani (Tulsa, Okla.) and Harvey L. Stein (Annapolis, Md.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A wound covering includes chemical sensor within a detecting temperature and pH at the skin surface. Changes in temperature and changes in pH at the wound surface are communicated by providing modifications to the visual indicia. The combination of either a change in temperature, a change in pH, or both provide a changing visual indicium that can communicate to the bandage wearer, or a medical caregiver, that a need to chang...