Skinvisible, Inc., a topical drug delivery company, announced that it has been issued a second patent by the U.S. Patent and Trademark Office protecting the ‘Polymer Composition’ of the Company’s Invisicare polymer delivery system. When topically applied, Invisicare-formulated products hold active ingredients on the skin for up to four hours, thereby affording the active ingredients an extended timeframe to perform their intended functions. Previously, a patent was issued to Skinvisible related...