US Patent Issued to Smith & Nephew on March 17 for "PH and moisture indicator devices and formulations" (British Inventors)

ALEXANDRIA, Va., March 17 -- United States Patent no. 12,578,318, issued on March 17, was assigned to Smith & Nephew PLC (Watford, Great Britain).

"PH and moisture indicator devices and formulations" was invented by Edward Yerbury Hartwell (Hull, Great Britain) and John Kenneth Hicks (Pocklington, Great Britain).

According to the abstract* released by the U.S. Patent & Trademark Office: "Disclosed herein are devices, wound dressings and methods for determining the pH of fluid or a wound exudate at a wound. Example devices include a device comprising a surface configured to contact the fluid or wound and a pH indicator covalently bound thereto or applied to the surface, wherein the pH indicator has a first colour prior to contact with the ...